Q. We've had some super hot and dry weather this summer. We get an occasional hit and miss shower, but some of my plants still look rough. Will the plants in most landscapes survive the dry spells without supplemental watering?A. Yes, it has been a doozy this summer, so I am not surprised that your plants are showing symptoms. Also, the problem has only been compounded by the fact that we had an unusually cool, wet spring before summer so the heat effect is exaggerated. Plants became accustomed to just the right amount of rain, at just the right time. With hot, dry weather, they have trouble acclimating themselves. Trees and shrubs that have been planted a year or less are the most vulnerable. However, plants that are well established and healthy can withstand much more drought stress. Of course there are exceptions to all generalities.
For instance, very well established Azaleas and Hydrangeas easily show drought symptoms. These plants have relatively shallow root systems adapted to semi-shady light conditions and moist (not wet) soil environments. Many times these plants are located in less than optimal landscape conditions and they suffer as a result from the heat of full sun. There are numerous other examples and plant needs must be looked on in a case by case basis. Therefore, it pays you to learn a little about specific plant needs prior to planting.
In the western part of the country many people have adopted a gardening practice called xeriscaping. I don’t really like the word for our region because it implies you must grow cactus or succulent plants only. Actually, the priciple is much more balanced and involves grouping plants by water needs and limiting heavy water use areas. It also involves implementing some very common sense water use practices. I have a few of these tips listed below and I encourage you to put them into practice.
All in all, this summer has actually been luxurious considering we had at least some rainfall in each month. In past summers, we've missed seeing rain for a month or longer. For more tips and information on drought tolerant plants visit the following link: http://www.aces.edu/pubs/docs/A/ANR-1336/ANR-1336.pdf or call the Master Gardener Helpline toll free at 877-252-GROW.Written by Bethany A. O’Rear of the Alabama Cooperative Extension System (ACES). She is housed at the C. Beaty Hanna Horticultural and Environmental Center, which is based at the Birmingham Botanical Gardens.
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