Category: shrubs in desert gardens

Red and green for holiday color in a hot dry garden

If you had planted  “Wonderful” pomegranate shrubs last Spring, and did not harvest the fruit this Fall, you would have plants in your garden that appear to have big, brilliant red Christmas tree ornaments on them.  Of course, the leaves on your pom shrubs would have turned a glorious gold then fallen, so your red “ornaments” would be on bare branches now.  

Mother Nature’s holiday ornament!

If you are thinking of adding a pomegranates to your garden in Spring, you will be happy to know they are very drought tolerant, as you can read here. The name “Wonderful” designates one of the best varieties of pomegranates for private gardens.

If you are reading this post in Australia or elsewhere in the Southern Hemisphere, pomegranates bear fruit from March to May, rather than from September to February as they do in the U.S. Southwest.

Among the other plants that will give you green and red during the holiday is the very drought tolerant Heavenly Bamboo, (Nandina domestica), which has bright red berries, reddish leaves and is not a bamboo at all.  I am not a big fan of the shape of this plant; it looks too much like a cluster of sticks to my eye…but nonetheless I do love the winter color and the fact that it will survive with considerable neglect.

This Heavenly Bamboo (Nandina domestica) is beginning to change from summer green to winter red.

Surviving considerable neglect is also a prime characteristic of the sturdy bottle brush, another plant that I do not care for–well, I don’t like the big tall ones with red blooms that are used as center barriers along freeways in California. 

Dwarf bottle brush “Little John” as a low hedge beside ice plant in a very drought tolerant planting in Grand Park in downtown Los Angeles.

BUT I really love the dwarf bottle brush variety Callistemon ‘Little John’ which is very suitable for home gardens. Instead of primary colors of plain red and plain green, this low-growing shrub has a blueish-grey cast to the leaves and a burgundy color flower.  

This drought-tolerant, dwarf Callistemon “‘Little John’ grows slowly, rarely needs any pruning and is colorful in Fall and winter.

Now there is one other color for the holiday season and that is white, as in white Amaryllis, the ones that you force for winter.  They are big and bold and can be transplanted into a sheltered corner of your hot, dry garden to bloom again year after year.  I did exactly that in Las Vegas, but the next bloom came over a year later near Easter, rather than Christmas. Since then it has bloomed regularly in the Spring.

And be sure to put luminarias out for the holidays to line your patio or walkway.  The old-fashioned way to do them is put tea lights inside paper bags. On Amazon the manufacturers state that the bags are fire resistant. If you can find them I’d recommend terra cota luminarias, some of which are battery powered, and you can use them year after year.

Finally…I am moving after the first of the year so I will be publishing this blog only on an irregular basis until I am settled into my new home. Happy New Year to you!

Read our 8 most popular newsletters

  1. Hot Days, White Nights, How Design a Moon Garden
  2. Australian Plants for a Desert Garden
  3. Cover up that naked wall
  4. Best and beautiful native shrubs for extreme heat
  5. Five fragrant plants for your garden
  6. Where to get free or cheap trees for your garden
  7. Four desert trees good for soil, 4 toxic ones
  8. Plants that bloom even in mid-summer scorching heat

Is that plant dead? Should I replace it now? Tips for Fall planting

Mother Nature plants in the Fall and so should you.  Instead, however, of simply deciding which trees, shrubs or perennials to add to your arid garden this Fall, you may be looking at which plants you need to replace. The record-breaking heat in the Southwest and California (and Australia!) this last summer baked the leaves on many plants and turned them brown  overnight. On others the leaves simply fell off the branches. The plants appeared dead.

Azalea regrowing after sunburn
After looking as if nearly dead, the cooler weather has brought new growth to this white azalea which thrived for years in a micro-climate backed up against a wall in almost total shade.

But don’t yank these sunburned plants out of your garden yet, especially now that the rains have come. Wait two or three weeks. The roots of dead-looking plants may have survived the heat and be ready to regrow.

If, however, you decide to replace some plants, consider the suitability of the ones you choose for replacements. The heat this last summer will probably be back next year and for many summers to come.  You may want to select more desert-like plants or take steps now to create micro-climates for parts of your garden that suffered most from the heat by adding shade-producing and heat-reducing plants.  And, unlike the Beanstalk of Jack-and-the-Beanstalk fame, the plants to create micro-climates don’t grow sky high overnight. Planting them this Fall–rather than waiting until Spring–will give them a head start on growth over the winter.

Plant now to create micro-climates in your garden

For starters you can help cool off your entire garden by planting a fast-growing hedge in front of a hot wall. This can be effective with both cement block walls around your property and  the stucco walls of your home. The shrubs’ leaves will block the sun from heating up the wall during the day so there will not be as much drying heat to be released after dark.  Overall your garden will feel cooler and a bit less dry.  And a cooler, slightly damper garden is better for all plants — and people.

Two drastically different hedge plants that grow fast are Pampas Grass (Cortaderia selloana) and Japanese privet (Ligustrum japonicum).

pampas grass
Behind this Pampas grass is a dull gray block wall. In one year it was covered up.

Pampas grass is close to being a Jack-and-the-Beanstalk plant. It will shoot up to as tall as 20 feet in one year, and should be cut back to 18 inches high in mid-winter.  But be aware: its blades have rough edges that can cut skin so wear gloves when cutting it back. And it may be very difficult to remove if you change your mind later. It is definitely a statement plant.

Ligustrum japonicum privet hedge in bloom
In Springtime the Japanese Privet hedge bursts into bloom.

The Japanese privet is more ordinary looking–just a basic green hedge.  It grows about two feet a year, however, and is quite drought tolerant. Poor soil conditions do not seem to bother it either. In Spring it is covered with white flowers that look almost like lilac blooms, but don’t smell nearly as nice as lilacs. You can see these and other shrubs for hedges in arid gardens here.

Planting a tree for more shade is another way to create a micro-climate to help other plants in your garden survive in hot weather.

Chitalpa taskentensis flowers in summer Hot Gardens

One rapid growing tree that is suitable for arid gardens is the Chitalpa (Chitalpa tashkentensis) which will grow about 3 feet a year to a maximum height of 25 feet.  It is a hybrid of the Desert Willow and the Catalpa tree that was created specifically to thrive in hot, dry climates.  While it likes balanced soil, slightly alkaline conditions will not impair its growth. I especially like it because it has long-lasting, pretty pink-white blossoms, an open branch structure and provides dappled shade, rather than dark shade. You can see other trees for hot, dry gardens here.

The right way to plant a tree or shrub

The hole for planting should be 2 1/2 times as wide as the root ball, but do not make it deeper than the root ball.  The crown (the part where the roots meet the trunk or main stem) should be at or slightly above ground level–not submerged in the hole.  Be sure to add a lot of rich organic mulch into and around the hole you dig for a new tree or shrub to provide nutrients for growth, especially root growth during winter.  Really soak the soil with water around the planting hole and, once planted, water the tree regularly until the plant is established.

Now here is one last recommendation for coping with our hotter, drier summers and the damage of relentless heat. In my last post I wrote about applying organic mulch around plants, trees,  and in flower beds to help supply nutrition. Another benefit of mulching  is that mulch provides an insulating layer to protect the roots from scorching summer heat and winter cold.  That’s right — winter cold and its potentially damaging effect on plants is right ahead of us now. More about this in an upcoming post.

Read our 8 most popular newsletters

  1. Hot Days, White Nights, How Design a Moon Garden
  2. Australian Plants for a Desert Garden
  3. Cover up that naked wall
  4. Best and beautiful native shrubs for extreme heat
  5. Five fragrant plants for your garden
  6. Where to get free or cheap trees for your garden
  7. Four desert trees good for soil, 4 toxic ones
  8. Plants that bloom even in mid-summer scorching heat

The dirty truth about yellowing leaves when Fall hasn’t even arrived

chlorosis shrub leaves

It is a subtle change but one day you notice that the leaves on one of your shrubs (or maybe a tree) are turning yellowish and as far as you know yellow leaves are not natural to this plant–even in Fall. You look closer and see that the veins in the leaves are still green as you can see in this photo.

Well, what you are looking at is chlorosis, a kind of iron-deficiency in plants that inhibits the development of chlorophyll, the stuff that makes green plants green and keeps them alive and growing.  It is most common in plants grown in alkaline soils with high pH.

The problem begins in the dirt, the soil in your garden.  Even in hot dry desert-like gardens there is ample iron in the soil, but unfortunately plants can’t access it. The technical causes for the iron/soil problems read like a chemistry textbook so I will skip it, but advise you to take steps to reverse the condition before it gets worse. After all, you don’t want to lose an expensive plant or tree, especially to a plant problem that is curable.

What you need to do at this time of year is apply a foliar spray of iron chelate (pronounced “key-late”) to the leaves of your plant. It is available online and probably at a local big box gardening or hardware store for less than $15. It may take repeated applications of the spray to green up your shrub again.

But even a foliar spray is a temporary solution, effective for two or three months.

The next steps are to

  • Test the pH of the soil around the plant with chlorosis using an inexpensive pH testing kit which you can easily find online.  You may want to test other parts of your garden too.  (In fact, you may want to check the pH every year!)
  • Add chelated-iron fertilizer to the soil around the plant or tree IN SPRINGTIME (not Fall).  This is a longer term solution than the foliar leaf spray.
  • Dig in extra amounts of organic materials in the Fall and the Spring to balance the soil in your plant beds to a neutral 7 pH.  If you can get it to 6.5, all the better. Plants love 6.5 pH!  Keeping a high level of organic materials in and around the plants is a long term solution to chlorosis.
Rio Grande Fax Tex Ash autumn

BTW, if you have a Fan Tex Ash tree the leaves on it will naturally turn yellow in Fall. It is one of the very few trees for hot dry gardens that has lovely Fall color. (Of course, there are the aspen trees that grow in the mountains around the deserts and also become golden in Fall.)

CLIMATE CHANGE UPDATE

In an abrupt about-face the Australians tossed out their Prime Minister who announced last week that keeping fuel prices low was more important than meeting Paris Accord climate change limits. Among the first things the new PM stated was that climate change came first–particularly in light of the severe drought that is impacting ranchers in New South Wales, outside of Sydney.

Read our 8 most popular newsletters

  1. Hot Days, White Nights, How Design a Moon Garden
  2. Australian Plants for a Desert Garden
  3. Cover up that naked wall
  4. Best and beautiful native shrubs for extreme heat
  5. Five fragrant plants for your garden
  6. Where to get free or cheap trees for your garden
  7. Four desert trees good for soil, 4 toxic ones
  8. Plants that bloom even in mid-summer scorching heat

Best fruit to plant in a hot, dry desert-like garden

pomegranate fruit on bush (

Shortly after moving to Las Vegas back in the 1990s I went on a hike with the Sierra Club in what is now the Red Rock Canyon National Conservation Area. Our destination on this hike was an old abandoned ranch about 3+ miles from the pull-out on Highway 159 where we parked our cars. The ranch owners had walked away from the ranch years ago and turned it over to the Bureau of Land Management. (And the BLM had pretty much just ignored the place.)

So about 10 of us tromped off across the wide canyon floor. As a newcomer to desert hiking I forgot to bring water and it turned out there was no water at this old ranch. Just a weather-beaten house, a couple of fences that tilted and sagged…AND a row of pomegranate bushes still producing big red pomegranate fruit. These 8-10 foot high shrubs had survived for years with only the water that fell from the sky. And in Las Vegas, the average annual rainfall is about 4 inches! It might be a bit higher up in Red Rock Canyon, but not by much.

This was evidence that pomegranates grow well even under very dry conditions. And if you add a little bit of care and water they will do even better. Another plus: the leaves turn a lovely yellow in Fall and at Christmas time the fruit–if you haven’t picked it–looks like red ornaments in your garden.

So if you want a low-water usage fruit to harvest from your own backyard, plant a pomegranate. The ‘Wonderful” variety is an excellent choice and will do well even with neglect.

But don’t neglect taking water with you on a desert hike. I have always had water with me ever since that day.

Las Vegas Red Rock canyon (
This view is from the pull-out where we parked our cars. The abandoned ranch where the pomegranates were growing is up against those mountains.

See more suggestions about fruit trees for hot dry gardens.

Visit my author’s site to see books I’ve written
and read a chapter of the children’s book free

Read our 8 most popular newsletters

  1. Hot Days, White Nights, How Design a Moon Garden
  2. Australian Plants for a Desert Garden
  3. Cover up that naked wall
  4. Best and beautiful native shrubs for extreme heat
  5. Five fragrant plants for your garden
  6. Where to get free or cheap trees for your garden
  7. Four desert trees good for soil, 4 toxic ones
  8. Plants that bloom even in mid-summer scorching heat