Lockerly Newsletter September 2016
A Special Collection
Lockerly Arboretum Foundation President Rodger Flotta accepted and transported the trees donated by David Freed, owner of Garden Design Nursery.
Lovers of Japanese Maples will be thrilled to know Lockerly Arboretum's collection grew significantly in just one day! Long time supporter and "Friend of Lockerly", Barbie Colvin was recently in the right place at the right time! A trek to David Freed's Garden Design Nursery in Danielsville resulted in the donation of 20 Japanese maples to the Arboretum.

The Arboretum has always been host to this landscape jewel. There are many scattered throughout the property and more recently, late Executive Director Jim Garner began expanding the collection. The significance of Mr. Freed's most generous donation affords the Arboretum an opportunity to create a new area in which an imposing collection of cultivars will be showcased. Lockerly's Horticulture Director, Debbie Foster, is excited to develop what is sure to be a must-see section within the Arboretum. Not only will Japanese Maple aficionados, and visitors in general, delight in the opportunity to view and compare a wide variety of cultivars in a single, scenic location, but students participating in the Arboretum's education programs will also be introduced to the beauty and variety of these magnificent specimens.

Among the cultivars donated by Mr. Freed is one of his recent introductions to the world of Japanese Maples. Acer palmatum ' Radiant TM' features bark with a pink and green irregular vertical striping as well as stable pink, green and white leaf variegation. This cultivar is sure to "wow" visitors to the Arboretum year round.

Arboretum staff will nurture and protect these lovely trees until weather conditions prove favorable for planting. Like Lockerly's Facebook page and/or visit its website: for more news and information about the development of this brilliant collection.

Watson-Brown Foundation Award

Thanks to a grant award for $10,000 from the Watson-Brown Foundation Junior Board, Lockerly is ready to launch an endeavor to Invest in Rose Hill's Heritage & Future.  The Watson-Brown grant will fund plaster repairs and window treatments in two of Rose Hill's bedrooms. Pictured accepting the check from members of the Junior Board are: Front Row: Sherrill Jones, Trustee and Rose Hill Committee Chair; Stephanie Sanchez, Junior Board; Kathy Chandler, Trustee. Back Row: Dick Mueller, Trustee; Bob Miller, Trustee; Sachen Pillay, Junior Board.

Go to for more information about our Invest in Rose Hill's Heritage & Future campaign.
September Gardening Tips
Debbie Foster
Lockerly Horticulture Director 

Unexpected Tree Loss during Summer
I recently had an opportunity to make a site visit to a home that had a seemingly healthy oak tree die rapidly.  I saw no evidence of leaf spots, beetles or any other pest problems but upon further inspection, I did find mushrooms growing just below the soil surface encircling the tree.  Mushrooms can be an indicator of root or wood rot. 

It is not uncommon to see trees and shrubs that appear healthy die suddenly during the heat of summer.  When we see a plant turn totally brown in a short period of time it usually means that the root system or vascular system has been compromised and the plant was unable to take up the water it needed to survive.   Some of the main causes for this are root rots, vascular wilts and wood boring beetles.  The infestation or damage probably occurred over a long period of time but the tree was able to cope until the heat of summer increased the plant's need for water causing the tree to die rapidly.

Another scenario we often see are healthy looking trees that fall over unexpectedly. Many trees that topple look perfectly healthy before they fall. Trees have large roots for support and smaller roots for the uptake of water and nutrients.  If a tree is suffering from root rot, it might produce a network of new, nonstructural feeder roots that are fine for survival but don't offer any support. Over time more and more of the larger roots are lost but the tree remains "healthy". Eventually the tree falls because there aren't enough structural roots left to hold it up.

For those of you who have irrigation systems for your lawn, you may experience some frustrations with tree and shrub loss from over watering.  Turf has very shallow roots and requires frequent watering to keep a lush green lawn.  Trees and shrubs have root systems that are larger and deeper. They prefer a good soaking less often and the soil be allowed to dry between watering. If the soil stays too wet from daily watering of turf, you run the risk of drowning your shrubs and promoting the perfect conditions for root rot.

 In late summer we often see infestations of fall webworm. Fall webworms primarily cause cosmetic damage to shade trees because of the large webs they form around the foliage at the end of tree branches. Because they are most abundant in mid to late summer, after the tree has had some time to store food, the tree's health is rarely in danger. Fall webworms can be easily destroyed or disrupted by pulling down the webs using a stick or pole, if the webs are within easy reach. This will expose caterpillars to birds and wasps for a natural form of control. If spraying is warranted, only spray the foliage closest to the web mass. Spraying the web itself does not give good contact with the caterpillars and spraying the entire tree is not necessary.

Treating very large trees for most any type of pest is not practical for homeowners and usually not necessary. On smaller trees and shrubs, if many caterpillars are present, you may need to spray to prevent serious damage. Two organic insecticides commonly used to control caterpillars are B.t. and Spinosad. Bacillus thuringiensis (B.t.) is a type of bacteria that only effects caterpillars. It is the active ingredient found in Dipel and Thuricide. Spinosad is another type of bacteria used to control caterpillars and some other pests. Spinosad is the active ingredient in Conserve.

Family Fun Day

It may not seem like it, but cooler weather is just around the corner. The kids are back in school and summer fun has come to an end ... or has it?  Come join the Lockerly staff and volunteers for a day of interactive activities for the whole family.  Family Fun Day will take place at the arboretum on Saturday, October 8th from 10:00 am to 2:00 pm. The art students from Georgia College will be offering a Kids in Clay pottery workshop. There will be guided hikes, candle making, leaf prints, microscopes, geology activities and much more.  Admission is free and everyone is welcome. Explore the arboretum, visit the Woods Museum Bee Exhibit and vote for your favorite scarecrow. 

Scarecrows in the Arboretum! 

Come join the fun as we kick off a new tradition at Lockerly.  Everyone is welcome to participate.   Scarecrows entered into  the contest will be on ex hibit throughout the arboretum during the month of October.  All entries must be submitted by September 26, 2016.  Visitors and Exhibitors may cast their votes for "Best in Show" and  "Best in Class".  

For more information about Family Fun Day or the Scarecrow Contest, go to  Registration forms are available online.

New Marketing Opportunities

Lockerly Arboretum has over a hundred camellias in our collection. Some of the camellias can be found throughout the arboretum and up around Rose Hill, but most of them are growing in a one acre wooded area just behind the geology pavilion. While the bulk of our collection is Camellia japonica and Camellia sasanqua, we also have a few specimens of C. hiemalis, C. vernalis and C. oleifera.  The Georgia state tourism department is currently putting together a Camellia Trail guide featuring gardens  across the state  that have Camellia collections. Lockerly Arboretum will be one of the gardens featured in this guide.

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Lockerly Arboretum  1534 Irwinton Road, Milledgeville, GA   478.452.2112  
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