Freeze Damage & Ice Storm Breakage on plants & trees

Fri, Feb 14 2014 09:02 | Plant Health, Pruning, Recent News | Permalink

What to do if your landscape was hit by the snow and ice of Winter 2014

Record breaking low temperatures caused a sustained deep freeze this winter. This was followed by an ice storm and cover of sleet and snow that lasted for days. Most of the plants that are used in our landscapes in zones 7a & 7b are not rated to handle this type of weather. Some damage is likely. The extent of the damage won't be known till late April or May. Wait until then to determine what needs to be pruned or replaced. The exception would be any plants or trees that may have broken or become uprooted due to the weight of the ice and snow.

As the snow and ice melts, again, I venture outside to observe what affect this has had on my landscape. There's obvious leaf damage on azaleas, loropetalum, indian hawthorne and other broadleaf evergreen shrubs. My beloved rosemary looks sad too. All of these plants have leaves that have turned black, grey or another peculiar color. Some have lost a few leaves, others have lost most of their foliage. The cold damage is most obvious on foliage. Severely affected foliage will drop off of the plant so be prepared to rake and remove this foliage. Don't prune the bare branches now. They might resprout leaves. Wait and see what happens.

Azalea foliage with freeze damage

What you may not notice immediately is damage to flowers, flower buds, bark and roots. Flowers on camellias certainly did not make it. Flower bud damage on camellias is easy to spot due to the size of the bud at this time of year. If the buds are black, they are obviously dead and will typically fall off the plant. The debris from flowers and buds should be removed from the ground so as not to harbor fungal diseases. Other plants with developing buds may have sustained damage thus there will be less flowers this year. Some plants and trees experience split bark which then causes the limb following the split to decline or die. This happens often on indica azaleas and yaupon trees. Root damage is harder to detect. I will be observing plants throughout metro Atlanta and will share typical findings in future blog posts, so stay tuned!

This camellia flower is damaged,
but buds and foliage look fine

Some pansies have damage, especially red & white ones. The bleached leaves and stems can be pinched back to remove that damaged foliage. The pansies will recover quickly.

Frost damaged Pansy. Image thanks to Simply Flowers

If a young tree or shrub became uprooted due to the soft soil and weight of ice and snow, it should be straightened as soon as possible. No need to rush out in the snow to do this, just get it done in the next week or so. Do not yank on the trunk to pull it upright. Instead, the root ball should be dug and shifted to the upright position. Stakes will be needed to hold the plant upright. Pruning is recommended to reduce the weight of the canopy and the limb-to-root ratio. This plant then needs to be treated as a newly installed item so be sure to water it and give it some tender loving care.

Major broken limbs on large shrubs and trees should be pruned soon also. Additional pruning might be needed to reshape the entire tree or shrub to return it into a balanced shape. Always make pruning cuts at the branch collar. Do not use black pruning paint over the cut. The trunk of the shrub or tree will heal on it's own if you prune it as indicated. Make your first cut where indicated. This reduces the chance of the limb ripping off the tree. Your second cut (2) will remove most of the limb and weight so that it is easy to make a clean third cut at the branch collar.

How to prune a large limb

Schedule a "Garden Walk and Plant Consultation" if you need assistance with pruning. I can advise what needs to be done or teach you how to do it. Later in the spring I can evaluate what needs to be replaced and help you decide if the same plant should be reinstalled or a different species chosen.

Danna Cain, ASLA
Home & Garden Design, Inc.
To schedule an appointment, complete this form
HomeGardenDesign.com

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