For:
By: Daniel E. Mullins
Extension Horticulture Agent
Help! I Can’t Stop Writing About the Hurricane
The effect of Hurricane Ivan on our landscapes continues to be the dominant topic among gardeners. I have subtly attempted to change the subject and get on to other subjects of horticultural interest. It appears that most gardeners are not quite ready for business as usual. So, because so many local residents have asked for more on the subject, here are some additional comments.
The storm’s violent bending and shaking of some of our remaining trees will have long term effects. Expect a wide range of symptoms to show up in the future. Several kinds of damage occurred that are difficult to detect this soon after the storm.
Broken branches, split trunks and those partially or entirely blown over are easily seen and can be dealt with. On the other hand, the more hidden damage requires some time before becoming evident.
Large trees store energy and are slow to show serious symptoms unless they have a sudden, violent experience such as a lightening strike, extremely high wind or a fire. So, what we are seeing now are acute symptoms.
Other trees, even those that appear healthy are struggling to some degree. They are beginning the long process toward complete recovery. Some have had their roots partially ripped from direct soil contact even though they remain upright. Others have twisted, cracked and bruised trunks and branches.
As roots are regenerated and healing of other damaged parts begins, a tree must tap stored energy. The recovery of the tree then depends upon it being able to reestablish roots and heal wounds from stored food and photosynthesis before some opportunistic pest attacks it during this vulnerable stage.
Trees have a remarkable ability to recover so remain positive about their chances. On the other hand, don’t be surprised if more signs and symptoms are seen as hot weather arrives next year. Unknown partially broken branches on some will suddenly turn brown. In other cases, entire limbs will gradually die. And, a few trees might be lost that were thought to have weathered the storm well.
There is no magic formula that can be recommended to encourage fast recovery. If the pruning of dead branches is necessary it should be done carefully, removing only what is necessary. Avoid heavy “hat rack” pruning which is sometimes done in an attempt to start the tree over. This type of pruning results in a poorly structured, weak tree.
Fertilization is not suggested at this time of year, and is rarely recommended at all for the more mature landscape trees. Young trees are more likely to respond to fertilizer if an application is made during late winter or early spring.
Water is the main ingredient that will help during the tree’s recovery process. Most trees and other landscape plants would appreciate one to two surface inches of water per week during this period of root recovery. To the homeowner this means watch the weather. If that much is received from rainfall, then no additional is recommended. During dry periods supplement with sprinkler irrigation.