Trees from Seminars 71 to 73
Go directly to the tree information by clicking on the title below
Go directly to the tree information by clicking on the title below
Tree from Seminar 71 By Peter Thurman
The California Buckeye is a tree of subtle elegance and evocative presence. It is lovely as a stand-alone specimen but is usually found in drifts or thickets filling winter-cool swales or rippling across rolling hillsides and bursting out of deep and craggy canyons.
Trade Name: California Buckeye or California Horse chestnut
Botanical Name: Aesculus californica
Family: Formerly Hippocastanaceae – now Sapindaceae
Parentage: Native to California and now becoming popular as an ornamental in Europe
Height: Large shrub or small tree, up 40 ft. (12 m) in height (in Europe)
Spread: Up 40 ft. (12 m)
Form: It is typically a multi-stemmed small tree in the wild
Bloom Period: June to August and a rich nectar source for many insects.
Flower: Beautiful and long lasting flowers are sweetly scented, white to pale pink, borne on erect 6 inches (15–20 cm) long panicles
Fruit: The massive orange-brown poisonous seeds are enclosed in a fig-shaped, spineless capsule or husk.
Foliage: The leaves that flush from sticky buds are finely toothed, dark green, and palmate with five leaflets.
Bark: Grayish bark, similar to beech (Fagus)
Habitat: Widely distributed throughout California, growing along the central coastline and in the lower elevations of the Sierra Nevada and Cascade mountain ranges, then extending to the foothills of the Siskiyou Mountains in Oregon.
Hardiness Zone: 7 - 8
Site Requirements: It can be found growing in a wide range of conditions from crowded, moist, semi-shaded canyon bases to dry south-facing slopes and hilltops. Often on its own or with native oaks.
Growth Rate: The “California buckeye” is long-lived up to 300 years in California
Pest Problems: It does not appear to be susceptible to Pseudomonas syringae pv. aesculi, various Phytophthora spp, Cameraria ohridella or Guignardia aesculi – all serious pathogens of horse chestnuts in Europe
Storm Resistance: Average for the species
Salt Tolerance: Average for the species
Planting: Transplants BR and B&B easily, suitable for CU-Structural Soil planting
Pruning: Prune broken and dead branches at planting and as necessary to improve structure
Propagating: Seed
Design Uses: Excellent in parks, residential areas, use in wide planting area as it tends to be low branched
Companions: Use with native plants and ferns
Other Comments: The bark, leaves, and fruits contain the neurotoxic glycoside aesculin, which causes rupturing of red blood cells in animals and people.
Photo
Source
This information has been gathered from personal observations of the author, living in the UK and from numerous book references. He is an Arboricultural and Horticultural Consultant and a Landscape Designer.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, Tree Worker Specialist, Aerial Lift Specialist, or BCMA science credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.
The California Buckeye is a tree of subtle elegance and evocative presence. It is lovely as a stand-alone specimen but is usually found in drifts or thickets filling winter-cool swales or rippling across rolling hillsides and bursting out of deep and craggy canyons.
Trade Name: California Buckeye or California Horse chestnut
Botanical Name: Aesculus californica
Family: Formerly Hippocastanaceae – now Sapindaceae
Parentage: Native to California and now becoming popular as an ornamental in Europe
Height: Large shrub or small tree, up 40 ft. (12 m) in height (in Europe)
Spread: Up 40 ft. (12 m)
Form: It is typically a multi-stemmed small tree in the wild
Bloom Period: June to August and a rich nectar source for many insects.
Flower: Beautiful and long lasting flowers are sweetly scented, white to pale pink, borne on erect 6 inches (15–20 cm) long panicles
Fruit: The massive orange-brown poisonous seeds are enclosed in a fig-shaped, spineless capsule or husk.
Foliage: The leaves that flush from sticky buds are finely toothed, dark green, and palmate with five leaflets.
Bark: Grayish bark, similar to beech (Fagus)
Habitat: Widely distributed throughout California, growing along the central coastline and in the lower elevations of the Sierra Nevada and Cascade mountain ranges, then extending to the foothills of the Siskiyou Mountains in Oregon.
Hardiness Zone: 7 - 8
Site Requirements: It can be found growing in a wide range of conditions from crowded, moist, semi-shaded canyon bases to dry south-facing slopes and hilltops. Often on its own or with native oaks.
Growth Rate: The “California buckeye” is long-lived up to 300 years in California
Pest Problems: It does not appear to be susceptible to Pseudomonas syringae pv. aesculi, various Phytophthora spp, Cameraria ohridella or Guignardia aesculi – all serious pathogens of horse chestnuts in Europe
Storm Resistance: Average for the species
Salt Tolerance: Average for the species
Planting: Transplants BR and B&B easily, suitable for CU-Structural Soil planting
Pruning: Prune broken and dead branches at planting and as necessary to improve structure
Propagating: Seed
Design Uses: Excellent in parks, residential areas, use in wide planting area as it tends to be low branched
Companions: Use with native plants and ferns
Other Comments: The bark, leaves, and fruits contain the neurotoxic glycoside aesculin, which causes rupturing of red blood cells in animals and people.
Photo
Source
This information has been gathered from personal observations of the author, living in the UK and from numerous book references. He is an Arboricultural and Horticultural Consultant and a Landscape Designer.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, Tree Worker Specialist, Aerial Lift Specialist, or BCMA science credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.
Tree from Seminar 72
Edited By Len Phillips
Chestnut Oak has been selected as the Society of Municipal Arborists, Urban Tree of the Year for 2017.
Botanical Name: Quercus prinus
Common Name: Chestnut Oak, Basket Oak, Rock Oak
Parentage: Native
Family: Fagaceae
Height: 50' - 70'
Spread: Varies considerably
Form: Rounded to pyramidal shape and dense
Bloom Period: Early to mid-March
Flower: 3" – 4" long catkins
Fruit: 1" long acorn, 3/4” wide, dark brown, cap covers 1/3 to ½ of the nut
Summer Foliage: Dark yellow green, grayish tomentulose underneath, look like chestnut leaves
Autumn Foliage: Orange yellow to yellow brown in the fall
Winter Color: Bark provides winter interest
Bark: Dark brown to black, more rich in tannin than any other oak, deeply furrowed, blocky bark
Habitat: East Coast
Culture: Tough, found on poor, dry, rocky, upland sites, adapts to any pH, full sun
Hardiness Zone: 4 – 8
Growth Rate: Moderate, up to 18 inches a year on wet and well-drained sites
Pest Resistance: Resistant to mildew and most major pests
Storm Resistance: Excellent
Salt Resistance: Good to excellent
Planting: B & B is best
Pruning: Needs minimal pruning except to raise lower branches
Propagating: Seed
Design Uses: Excellent for parks, golf courses and commercial areas, use as street tree only when space is available
Companions: Use with shrubs such as Taxus or groundcovers such as vinca
Photos: Full size tree
Leaves and acorn
Sources
This information has been gathered from personal observations of the author, living in Massachusetts Zone 6, and information provided by J. Frank Schmidt & Son.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, Tree Worker Specialist, Aerial Lift Specialist, or BCMA science credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.
Edited By Len Phillips
Chestnut Oak has been selected as the Society of Municipal Arborists, Urban Tree of the Year for 2017.
Botanical Name: Quercus prinus
Common Name: Chestnut Oak, Basket Oak, Rock Oak
Parentage: Native
Family: Fagaceae
Height: 50' - 70'
Spread: Varies considerably
Form: Rounded to pyramidal shape and dense
Bloom Period: Early to mid-March
Flower: 3" – 4" long catkins
Fruit: 1" long acorn, 3/4” wide, dark brown, cap covers 1/3 to ½ of the nut
Summer Foliage: Dark yellow green, grayish tomentulose underneath, look like chestnut leaves
Autumn Foliage: Orange yellow to yellow brown in the fall
Winter Color: Bark provides winter interest
Bark: Dark brown to black, more rich in tannin than any other oak, deeply furrowed, blocky bark
Habitat: East Coast
Culture: Tough, found on poor, dry, rocky, upland sites, adapts to any pH, full sun
Hardiness Zone: 4 – 8
Growth Rate: Moderate, up to 18 inches a year on wet and well-drained sites
Pest Resistance: Resistant to mildew and most major pests
Storm Resistance: Excellent
Salt Resistance: Good to excellent
Planting: B & B is best
Pruning: Needs minimal pruning except to raise lower branches
Propagating: Seed
Design Uses: Excellent for parks, golf courses and commercial areas, use as street tree only when space is available
Companions: Use with shrubs such as Taxus or groundcovers such as vinca
Photos: Full size tree
Leaves and acorn
Sources
This information has been gathered from personal observations of the author, living in Massachusetts Zone 6, and information provided by J. Frank Schmidt & Son.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, Tree Worker Specialist, Aerial Lift Specialist, or BCMA science credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.
Tree of the Seminar 73
By Len Phillips
Autumn Treasure Hophornbeam is a cultivar from a native hophornbeam also known as Ironwood and it is an ideal tree for naturalistic landscaping. Autumn Treasure Hophornbeam is suited for city living and has an upright narrow form that facilitates uniform street tree plantings.
Trade Name: Autumn Treasure® Hophornbeam
Botanical Name: Ostyra virginiana ‘JFS-KW5’
Family: Betulaceae
Parentage: Native species
Height: 30' - 40'
Spread: 20' - 25'
Form: Upright, narrow form
Flower: Small catkins, 1” long
Fruit: Nutlet is 1/2” long, resembles hops
Foliage: Serrated leaves
Spring Color: Pale yellowish-green flowers, stems and young leaves
Summer Foliage: Dark green
Autumn Foliage: Golden yellow, outstanding for fall color
Winter Color: Holds brown leaves throughout the winter
Bark: Grayish-brown with long horizontal strips
Habitat: Eastern half of the U.S.
Culture: Moist, acidic soil, does well in shade
Hardiness Zone: 4 – 9
Heat Zone: 7 – 5
Growth Rate: Full size in 30 years
Pest Resistance: Free of major pest problems, except for an occasional witches' broom
Storm Resistance: Excellent
Salt Resistance: Poor
Planting: Transplant B&B or container, very slow recovery bare root
Pruning: Seldom needs pruning Propagating: Grafted to seedlings or rooted cuttings made in winter
Design Uses: Excellent for naturalizing a street or residential landscape
Companions: Best with shade loving groundcovers and with native hophornbeams
Site Requirements: Full sun to partial shade
Other Comments: Ideal for naturalizing landscapes
Photo
Sources
This information has been gathered from personal observations of the author, living in Massachusetts, Zone 6 and information provided by J. Frank Schmidt & Son.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, or BCMA practice credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.
By Len Phillips
Autumn Treasure Hophornbeam is a cultivar from a native hophornbeam also known as Ironwood and it is an ideal tree for naturalistic landscaping. Autumn Treasure Hophornbeam is suited for city living and has an upright narrow form that facilitates uniform street tree plantings.
Trade Name: Autumn Treasure® Hophornbeam
Botanical Name: Ostyra virginiana ‘JFS-KW5’
Family: Betulaceae
Parentage: Native species
Height: 30' - 40'
Spread: 20' - 25'
Form: Upright, narrow form
Flower: Small catkins, 1” long
Fruit: Nutlet is 1/2” long, resembles hops
Foliage: Serrated leaves
Spring Color: Pale yellowish-green flowers, stems and young leaves
Summer Foliage: Dark green
Autumn Foliage: Golden yellow, outstanding for fall color
Winter Color: Holds brown leaves throughout the winter
Bark: Grayish-brown with long horizontal strips
Habitat: Eastern half of the U.S.
Culture: Moist, acidic soil, does well in shade
Hardiness Zone: 4 – 9
Heat Zone: 7 – 5
Growth Rate: Full size in 30 years
Pest Resistance: Free of major pest problems, except for an occasional witches' broom
Storm Resistance: Excellent
Salt Resistance: Poor
Planting: Transplant B&B or container, very slow recovery bare root
Pruning: Seldom needs pruning Propagating: Grafted to seedlings or rooted cuttings made in winter
Design Uses: Excellent for naturalizing a street or residential landscape
Companions: Best with shade loving groundcovers and with native hophornbeams
Site Requirements: Full sun to partial shade
Other Comments: Ideal for naturalizing landscapes
Photo
Sources
This information has been gathered from personal observations of the author, living in Massachusetts, Zone 6 and information provided by J. Frank Schmidt & Son.
The test that follows contains 10 questions. Before taking the test be sure you have read the article carefully. The passing grade is 80% on the entire test.
ISA will award .5 CEUs* for a passing grade. SAF members will earn 0.5 Cat. 1-CF for every five passing test scores. The cost for taking this test is $10. If you purchase an annual subscription for 15 credits, the cost per credit is reduced by 50% (see Annual Subscription link below). We will report all passing test scores to ISA and/or SAF. If you are a member of ISA and SAF we will report your passing test scores to both for no additional cost. Please be sure to add both of your certification numbers when you sign in. Tests with passing scores may be submitted only once to each organization.
*Members of ISA may apply the 0.5 CEUs toward Certified Arborist, Municipal Specialist, or BCMA practice credits.
California UFC members will receive credit for passing the test. Please add your CaUFC number after your ISA and/or SAF certification number.
ASCA members may submit your ISA certification record to the ASCA and receive credits one for one.
MTOA members must follow the ISA instructions indicated above.
To take the test by the pay per test option, click on the 'Pay Now' button below where you can send payment online securely with your credit card or Pay Pal account. After your payment is submitted, click on ‘Return to Merchant' / gibneyCE.com. That will take you to the test sign in page followed by the test. Members with certifications from both ISA and SAF, please be sure to add both of your certification numbers. These numbers are important for reporting purposes.
To take the test as an annual subscriber with reduced rates, click on Password and enter your test password which will take you to the test sign in page. If you would like to become a subscriber see our Annual Subscription page for details.
When you have finished answering all questions you will be prompted to click ‘next’ to send your answers to gibneyCE.com. You can then click ‘next’ to view your test summary. A test review of your answers is available upon request.
All passing test scores are sent from gibneyCE.com to your organization(s) at the end of every month and they will appear on your certification record 4 to 6 weeks* after that. ISA maintains a record of CEU credits on their website.
*SAF requires 5 passing test scores before reporting.
Test re-takes are allowed, however you will have to pay for the retake if you are using the pay per test option. You can spend as much time as you would like to take the test but it is important not to leave the test site until you have answered all the questions and see the 'sending your answers' response.