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Hot Gardens Newsletter:  November-December 2006 

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Too Hot To Bloom.  During a recent trip to a local nursery we saw some new shrubs that may solve the hot weather shut-down problem.   Every year, after the daily temperature reaches 90F or greater, plants in hot, dry climates stop flowering and stop growing.  They just sit in the ground, trying to survive.  
There are, however, some yellow-leafed shrubs and perennials to liven up that all-green summer-survival garden.  And it is not too late to do your Fall planting, especially if you live in a lower altitude.  Remember -- Mother Nature plants in Fall and so should you. (Note:  yellow leaves can also be a symptom of Chlorosis in plants.  This nutrient condition should be treated.)

Yellow Fever.  One of our favorite new shrubs is the Golden Smoke Tree, (Cotinus coggygria 'Golden Spirit').  Like its cousin, the Purple Smoke Tree, it is an urn-shaped shrub that can grow taller than 6 feet.  It can also be trained as a standard, a small tree.  It prefers well-drained soil and when the leaves are exposed to full sun they become yellow and translucent. 

If you are very daring you could plant several of these side by side to create a golden yellow hedge -- and amaze your neighbors!  Another use would be as a dramatic solo shrub sited against a backdrop of a basic green hedge of Japanese privet (Ligustrum japonicum) or Photinia.  It will need regular watering during the first year, but after that it is a low water usage plant.  A bonus: small, light pink flowers in summer.

Yellow Bird of Paradise (Caesalpinia gelliesii) is a variation on a desert plant which is so sturdy that the California Highway Department has installed it along freeways where it gets terrible treatment and thrives beautifully.  It grows to 6 feet tall, has fine, almost lacy leaves, and large yellow blossoms all over it in summer.  Depending upon your climate, it may lose those leaves in winter -- or not.  Regular watering for the first year, then low water usage.  A bonus: do not fertilize it.  The Bird of Paradise fixes nitrogen in the soil.

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Forward, Mulch!  There is a very good, scientific reason why you should mulch your flower beds and around your trees once or twice a year.  What happens over time is that the organic mulch you dig into or spread over your flower beds gets used up -- the nutrients are utilized by the plants.  After the nutrient content is exhausted, the soil begins to "go backwards", reverting to the basic native soil that existed in your garden before you improved it.  Most probably that native soil is very alkaline, hard as a rock, even saline -- not what you want for a beautiful garden.  By making regular applications of organic mulch you are keeping your garden soil in the condition plants need.  Non-organic rock mulch, obviously, does nothing to improve the soil; it only shield plants' roots from the heat and keeps down weeds. 

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More gardening news for you
crape myrtle hot pink perennials for lawn replacement clematis in bloom
For a burst of color in summer 
count on the Crape Myrtle. 
Other trees are here.
Learn the best plants to replace
 a water-guzzling lawn with

drought tolerant perennials.
Clematis is just one of
many beautiful vines that
thrive in hot climates.

Our 9 Most Popular Hot Gardens Newsletters: 

1.  Flowering plants that reliably bloom in scorching mid-summer heat.

2.  Australian plants and trees that grow well in hot, dry climates.

3.  Weather-proofing palms for winter; cold weather palm trees.

4.  A white garden for night time viewing.

5.  Topiary can be easy to create and add charm to your garden.

6.  Techniques to combat death by heat exhaustion of plants in pots.

7.  Cactus as security barriers for your property.

8.  South African aloes for brilliant late winter color in your garden.

9.  Frugal gardening tips to save you money.

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