Sunday, November 4, 2018

Flowering Dogwood – Iconic Southern Beauty


Flowering dogwood (Cornus florida) has long been one of the most beautiful and iconic symbols of the southern United States. Perhaps I think that because I grew up in Virginia where it is the state flower (it is also the state flower of North Carolina and the state tree for Missouri). The beautiful floral display of flowering dogwood graced many a home décor item, from tea towels and throw pillows to china and table accessories. The tree itself was in our yards, where its blocky bark and red fall fruits were just as familiar as the flowers.

Over the years I’ve come to appreciate this tree for its many qualities to humans and wildlife alike. In this fall season, two of those qualities are front and center: excellent fall color and fruit for wildlife. Throughout the year, it is a nice medium-sized tree, perfect for smaller lots (or plant a bunch if you have more room).

Flowering dogwood fall color and fruits

Where you plant this tree affects its performance. It needs enough sun to set sufficient flowers and fruit, yet it needs enough shade to achieve the elegant layered branch structure and to avoid crispy leaves. I think it is perfect for areas with morning sun and afternoon shade.  Allow room for it to gracefully spread 20-30 feet wide and tall over about 30 years. The white “petals” are really modified bracts; the flowers are small yellow flowers in the very center.

A mature flowering dogwood (Cornus florida) has a beautiful shape

I’d like to offer a few thoughts about a health problem that has been with us since 1987: dogwood anthracnose, a fungal disease that has spread into the region (first detected in the south in 1987 after initial detection in the US in 1978). First, choose quality trees and I recommend getting them from a nursery (rather than transplanting from the wild). Second, site the tree appropriately and protect it from the stress of dry conditions (e.g., water as needed, mulch appropriately). If you notice problems, consider applying a fungicide. I found two good resources from the Forest Service and from the Connecticut AES with helpful pictures for diagnosis and care.

Flowering dogwood is native throughout the Eastern US, from the deep south all the way to Canada. It is a member of the dogwood family (Cornaceae) which also includes black gum (Nyssa sylvatica), another native tree with good fall color and fruit for wildlife. It is related to several other dogwoods that are more shrub-like (read my earlier post about those dogwoods here).

An unusually red one from 2012

Seeing the fall color now is a good time to notice how beautiful this native tree can be. If you have fond memories like I do, you can now appreciate it even more for its other qualities.

4 comments:

  1. Are any Geotgia trees getting anthracnose? Many trees had it in Louisiana when I was gardening there.

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    1. This has a map of reports as of 2016. https://www.fs.fed.us/nrs/tools/afpe/maps/pdf/DWA.pdf

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  2. Really pretty dogwoods this Autumn in the Atlanta area. Of course, they are every year!

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  3. I think of dogwoods as understory shade trees but the best looking trees in our corner of the world are out in full sun. They have stunning fall color.

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