Got Nature? Blog

Purdue Extension forester Lenny Farlee introduces you to the Devil’s Walking Stick, a small tree from the ginseng family found in southern Indiana. It is identifiable by thorns or spikes along the stem, unique doubly compound leaves, and large clusters of small white flowers.

If you have any questions regarding trees, forests, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Devil’s Walking Stick, Purdue Arboretum Explorer
Devil’s Walking Stick, Native Trees of Indiana River Park, Purdue Fort Wayne
Investing in Indiana Woodlands, The Education Store, Purdue Extension resource center
Forest Improvement Handbook, The Education Store
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources

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In this edition of Wildlife Habitat Hint, Purdue wildlife extension specialist Jarred Brooke shares methods to control the invasive sericea lespedeza. This plant species, though was once used for erosion control and mineland reclamation, is too invasive and of little wildlife value.

If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Sericea Lespedeza: Plague on the Prairie, Purdue Extension
Wildlife Habitat Hint, Playlist, Purdue Extension – Forestry and Natural Resouces
Invasive Species, Playlist
A Woodland Management Moment, Playlist
Woodland Stewardship for Landowners, Playlist
Habitat Help LIVE Q&A – Native Grasses and Forbs for Wildlife, Video, Purdue Extension – Forestry and Natural Resources Youtube channel
Renovating Native Warm-Season Grass Stands for Wildlife: A Land Manager’s Guide, The Education Store, Purdue Extension resource center

Jarred Brooke, Wildlife Extension Specialist
Purdue Department of Forestry and Natural Resources

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This time of year, many black walnut trees’ leaves may have black spots, turn yellow and begin to drop. This is commonly known as anthracnose, a fungal disease that causes trees to drop their leaves prematurely.

Anthracnose is worsened by wet weather, and some trees are more genetically susceptible to anthracnose than others. It is not fatal but can look like a serious problem. The absence of leaves can slow a tree’s growth and can reduce the nut crop, although by this time of year growth may have slowed or stopped for the season. It can also weaken

Anthracnose generally begins as small circular brown to black areas on the leaflets. Over the season those spots expand and cause leaf drop. There are a few other leaf spot diseases of black walnut, see the references below for descriptions of those diseases.

Although unsightly, there is no need for further action if you are growing timber and have anthracnose in a plantation or woods. It can be an issue if you are growing walnuts for a nut crop, and there are resources and spray products to help manage the fungus in those situations.

If you have individual landscaping trees and want to limit anthracnose spread there are few things you can do:

• Gather fallen leaves and compost or remove them from the site.
• Control weeds which could carry the fungus.
• Plant walnut trees where there is good air circulation.
• Keep the trees healthy and vigorous by managing soil fertility and thinning competition as needed.

Resources
Walnut Anthracnose, Walnut Notes, U.S. Department of Agriculture, Forest Service, North Central Forest Experiment Station
Planting and Care of Fine Hardwood Seedlings. Paula M. Pijut (ed.):
– Diseases in Hardwood Tree Plantings, The Education Store, Purdue Extension resource center
– Planting Hardwood Seedlings in the Central Hardwood Region, The Education Store
– Regenerating Hardwoods in the Central Hardwood Region:  Soils, The Education Store
– Fertilizing, Pruning, and Thinning Hardwood Plantations, The Education Store
– Weed Competition Control in Hardwood Plantations, The Education Store
– Resources and Assistance Available for Planting Hardwood Seedlings, The Education Store

liz Jackson, Manager Walnut Council / IN Forestry Woodland Owners Association (IFWOA) & Engage Specialist
Purdue University Department of Forestry and Natural Resources

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Purdue Extension forester Lenny Farlee introduces you to the quaking or trembling aspen. This tree is found in northern Indiana and typically identifiable by whitish to grayish bark with dark spots where the branches come out.

If you have any questions regarding trees, forests, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Aspen, The Education Store, Purdue Extension resource center
Quaking Aspen, Purdue Fort Wayne
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources

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On this edition of ID That Tree, Purdue Extension forester Lenny Farlee introduces you to the northern white cedar, a native conifer that is used for ornamental, windbreak and reforestation purposes. This evergreen has distinct scale like foliage which is soft to the touch. He shares how to distinguish it from the eastern red cedar.

If you have any questions regarding trees, forests, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
ID That Tree: Eastern Red Cedar, Video
Thuja occidentalis, The Purdue Arboretum Explorer
Investing in Indiana Woodlands, The Education Store, Purdue Extension resource center
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources

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Purdue Landscape Report: Have you noticed large, messy webs on trees? You may have seen a colony of fall webworms. These caterpillars hatch in mid-July but tend to become more noticeable as the summer progresses. They often eat branches bare of leaves but are they a threat to tree health?

What do they look like?

Fall webworms are small, fuzzy pale-yellow caterpillars (figure 1) that build large, conspicuous white webs in trees in the late summer (figure 2). Their webs stretch over tree branches and grow over the course of the summer. When disturbed, the caterpillars will violently thrash back and forth in a bid to ward off predators.

What kind of damage do they cause?
Fall webworms eat the leaves of many species of deciduous trees and bushes. This damage occurs late in the summer shortly before the trees normally drop their leaves for fall. Therefore, fall webworms very rarely do serious damage to trees. In most cases the trees will grow their leaves back the following spring. On rare occasions, a tree that is already highly stressed may be further weakened by fall webworm damage. However, most trees, even heavily infested trees, are minimally affected and show no signs of damage the following spring.

Do they need to be managed?
Fall webworm damage generally looks much worse than it is. In general, trees only need to be managed for fall webworm if the owner is concerned about aesthetics. In that case, the easiest means of management is pulling the web off the tree by hand and putting it in a bucket of soapy water or freezing it. Some people may be sensitive to the caterpillars’ hairs so gloves should be worn to prevent contact.

In cases where the webs are too high up to be reached, they can be managed through insecticides. Further instructions can be found here.

Cover image by Photo by msumuh on Flickr.

Resources
Fall Webworm Bulletin, Purdue Extension -Entomology
Which Web is Which, Purdue Landscape Report
Will My Trees Recover After Losing Their Leaves?, Purdue Landscape Report
Safe Caterpillar Control, Purdue Landscape Report
Mimosa Webworm, The Education Store, Purdue Extension resource center
Sod Webworms, Turf Science at Purdue University
Bagworm caterpillars are out feeding, be ready to spray your trees, Purdue Extension – Forestry and Natural Resources

Elizabeth Barnes, Exotic Forest Pest Educator
Purdue University Department of Entomology

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Join Kara Salazar, Assistant Program Leader and Extension Specialist for Sustainable Communities, and Sarah Hanson, Ag & Natural Resources Educator for Purdue Extension in Johnson County, as they introduce you to the world of rainscaping and rain gardens.

If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Rainscaping Education Program, Purdue University
Master Gardeners Program
Ask An Expert, Playlist, Purdue Extension – Forestry and Natural Resources Youtube channel
Rainscaping, Playlist
Rain Gardens Go with the Flow, Indiana Yard and Garden, Purdue Horticulture
Rainscaping Education Program Highlighted in NOAA Annual Report, Got Nature? Post, Purdue Extension
What is Rainscaping? Purdue Rainscaping Education Program Video, Purdue Extension
Q&A About Drainage Water Recycling for the Midwest,  The Education Store, Purdue Extension resource center
Become a Purdue Master Gardener, The Education Store
Climate Change: How will you manage stormwater runoff?, The Education Store

Kara Salazar, Assistant Program Leader and Extension Specialist for Sustainable Communities
Department of Forestry and Natural Resources

Sarah Hanson, Ag & Natural Resources Educator
Purdue Extension for Johnson County

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Join Purdue Extension wildlife specialist Jarred Brooke as he talks about all things regarding planting wildlife food plots. This includes a step by step guide from planning to planting, explanation of types of food plots, types of seed, seed mixes and more.

If you have any questions regarding wildlife, trees, forest management, wood products, natural resource planning or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
Calibrating a No-Till Drill for Conservation Plantings and Wildlife Food Plots, The Education Store, Purdue Extension resource center
Frost Seeding to Establish Wildlife Food Plots and Native Grass and Forb Plantings, The Education Store
Now is the time to sow native grass and forbs seeds. Here’s why. Got Nature? Blog, Purdue Extension – Forestry and Natural Resources
Habitat Help LIVE Q&A – Native Grasses and Forbs for Wildlife, Video, Purdue Extension – Forestry and Natural Resources Youtube channel

Jarred Brooke, Wildlife Extension Specialist
Purdue Department of Forestry and Natural Resources

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In this edition of ID That Tree, Purdue Extension forester Lenny Farlee introduces you to the large tooth or big tooth aspen. This tree needs full sunlight and often thrives in areas where the soil has been disturbed. The leaf stems are long and flat which allow them to flutter in the wind.

If you have any questions regarding trees, forests, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
Aspen, The Education Store, Purdue Extension resource center
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources

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Meet the Hackberry. Purdue Extension forester Lenny Farlee introduces you to this native tree with single toothed leaves, an uphill/downhill shaped base of the leaves and a gray, ashy bark with warty/bumpy areas with smooth spots in between.

If you have any questions regarding trees, forests, wildlife, wood products or other natural resource topics, feel free to contact us by using our Ask an Expert web page.

Resources
ID That Tree, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
A Woodland Management Moment, Playlist, Purdue Extension – Forestry and Natural Resources Youtube Channel
Hackberry/Sugarberry, The Education Store, Purdue Extension resource center
Investing in Indiana Woodlands, The Education Store
Tree Appraisal and the Value of Trees, The Education Store
Forest Improvement Handbook, The Education Store

Lenny Farlee, Sustaining Hardwood Extension Specialist
Purdue University Department of Forestry and Natural Resources

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