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Kentucky Trees #6: Mimosas and Trees of Heaven

We all live in a forest: 1) Making sure new plantings fit the spot 2) Treeific Information, Trees of Heaven (aka Chicken (Manure) Tree and Mimosas
To see "Kentucky Trees #5: Flowering dogwood is hardy" Click Here

By Billy Joe Fudge

Last time we discussed many of the problems with having healthy, long-lived trees in our Urban Landscapes. This time we will begin looking at some things we can do to increase the health and life-span of our yard and street trees.



If you are planting a tree in a particular spot, make sure the tree fits the spot. I know this seems elemental and I am not intending to underestimate your intelligence. However, when planting a 6 feet tall sapling with an 18 inch ball it is easy to forget that this tree could soon be 60 or more feet tall and have a crown 40 or more feet in diameter.
So when considering the area needed for your tree you must look up for what is above, out for what is around and down for what is on or beneath the surface.

If you have a tree in a particular spot and would like to keep that tree in that particular spot then be very careful what you do to the tree and the space it inhabits.

More young, yard and street trees are damaged by weed-eaters, lawn mowers and too much mulch than by insects and disease.

Mulch is very good to prevent weed-eater and lawn mower disease but mulch should be no deeper than 3.5 inches in depth against the tree. Mulch that is too deep against the bark provides an environment that can be inhabited by insects and disease. It also can cause the outer bark to rot. This can starve the tree of water and nutrients which are transported to the trees crown by the inner bark.

TREEIFFIC INFORMATION: Mimosa and Tree of Heaven

The month of July is blooming time for Mimosa and Tree of Heaven. Both are beautiful but neither is a particularly good yard tree.

There are about 450 varieties of Mimosa and they are all tropical or sub-tropical. Proof of that came during the last Ice-age in Kentucky. The period of time was roughly 1975 through 1985(just a note, the frost line never thought to be lower than 18 inches in Kentucky was found 48 inches in the winter of 1976-77).

During that most recent Ice-age most of the Mimosas were killed or died back to the roots. Since that time and during this current period of thawing the Mimosas have rebounded nicely. With their fragrant, pinkish flowers they appear as edge trees along sides of our highways, woods, and fence rows.

Mimosa fails the "good yard tree test" by being a multi-stemmed, short-lived (particularly during Ice-ages), tree that is continually dropping limbs, twigs and foliage.

Tree of heaven, like Mimosa, is a truly beautiful compound leafed tree. It flowers in mid-April in the South and blooms later as one travels further to the North.

With female flowers on one tree and male on others it is very easy to tell one from the other by the smell of the male flowers.

Rather unpleasant to the nose, but the insects really are attracted to them. It grows in clumps by root sprouting. It considered to be a weed tree in the United States, but is nevertheless beautiful as a forest edge tree in fence rows, and along road sides.

It looks very tropical and the flowers are in clumps ranging from yellow, green to a soft reddish hue.

Oh yes, back to the foul smell of male flowers; in addition anywhere the bark is broken on the trunk or limbs are scraped or broken that foul smell will meet you face to face. The nickname of the tree is "The Chicken (Manure) Tree" or some linguistic interpretation thereof.


This story was posted on 2008-08-03 09:40:08
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Scenic Adair Co., KY: Tree of Heaven on KY 61



2008-08-03 - KY 61 between Breeding & Sparksville, District 4, Adair Co., KY - Photo By Ed Waggener.
WE ALL LIVE IN A FOREST columnist Billy Joe Fudge describes the Tree of Heaven as a "very tropical looking tree." The one in the upper right hand corner of the photo above, in bloom, is in as tropical a part of Adair County as one can get, between the 1 and 2 mile marker on KY 61, as one travels north out of tropical Cumberland County through Breeding to this point on the beautiful sweep of KY 61 down to one of Adair County's most beautiful scenes, the bridge and silo in the K. Dunbar Hollow.

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Trees of Kentucky: Mimosas



2008-08-04 - Jericho, Adair County District 6, KY - Photo By George Rice.
THESE MIMOSA TREES ARE ON THE HOLMES BEND ROAD across from the Charity Baptist Church. "I thought they were just awsome," wrote George Rice, the photographer. "The flowering trees were just working with birds and bees including hummingbirds." The pictures were taken July 15, 2008, when the trees were at their best.

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