Surviving Arizona Summer

Seasons

August felt blisteringly long this year. With the nuclear heat, I didn’t go outside much. Just enjoyed the view of my landscape from indoors. Now that it’s September and the nighttime lows are coming down, it’s time to get outside and see how my plants survived.

Most of my established plants made it through just fine. The front yard irrigation timer shorted out and nothing got watered for about a month. Things started showing signs of stress, but I hand watered and got the system running again. The Spanish dagger and yellow bells showed the worst stress, along with a young slipper plant.

Spanish_dagger

Spanish dagger showing signs of heat stress. This yucca likes regular water.

Slipper_plant_burned

A young slipper plant has brown at the base of each stalk. It may be too damaged to survive.

In the back yard, I should have watered my smaller/younger cacti to help them through. Many showed signs of sunburn at the end of August. I didn’t notice any sunburn in mid-August when I looked at the yard, but at the end of the month, BAM! The summer rains washed away most of the basins around my plants, so last week I rebuilt them. Now I’ll be able to give them larger drinks. A little attention and everything will flourish.

Cardon_sunburn

Baby Cardon with yellow and black sunburn. A cardon is a cousin to the saguaro.

Parrys_agave

Parry’s agave losing lower leaves

Hedgehog_cactus

Small hedgehog cactus with sunburn

Golden_barrel_cactus_baby

Small golden barrel cactus sunburn

Some heat stress is normal for this time of year. The brittlebrush and penstemon go dormant the entire plant may appear dead. My rose bush looks seriously neglected. We have a row of bell pepper plants in the garden that amazingly survived (with daily water), though the peppers roasted on the plants before we could eat them. I’m hoping the plants will be able to produce better through the fall, to make it worth keeping them alive.

Brittlebrush-jojoba

Brittlebrush and jojoba

Bell-pepper

Bell pepper in the summer garden

Blue_agave_beetle

Blue agave that died from an agave beetle. Since I don’t treat my plants with insecticide, all of my blue agaves will eventually die and be replaced by the pups.

Our neighborhood experienced some saguaro carnage this summer as monsoon winds ripped through our street. A five foot saguaro broke off near the base. It had previously developed cracks from overwatering and couldn’t withstand the wind.

Dead_saguaro

Fallen saguaro

A reminder that even tough native plants can succumb.

The contracted pleats of my young saguaros indicated they need a drink. I’ll water them weekly until they plump back up. Remember that a saguaro will absorb all of the water its roots allow, so watering when the ribs are expanded can lead to the cracking that killed my neighbor’s plant.

Saguaro_shaded

Baby saguaro with contracted ribs. I put a paper towel over the top to shade the sunburn.

Baby_saguaro

Baby saguaro with expanded ribs.

Summertime landscape chores

Seasons

How did you enjoy the flooding?

basin flood

Phoenix flooding

With all of the rain, my landscape is looking green this summer! I’m especially happy that the young cacti in my yard that were a little sunburned look much healthier. The first year in the ground is always hardest for a plant.

My bushes grow more than average with the extra water, which means they look due for pruning. Since I don’t like gumdrop shapes, what is the best way and timing for pruning?

summer desert bushes

Bushes have grown and greened up with the rain.

I found a pruning schedule with recommendations specific to each plant. For many bushes it recommends only pruning once or twice a year. Here is another pruning overview by U of A. I’m surprised to find that they don’t recommend pruning Texas Sage in summer, since it tends to be one of the most often-pruned plants.

Texas sage

Texas sage in bloom, getting large and shaggy

A late summer pruning helps trim back excessive growth, but will reduce blossoming ends and could be put off until spring. If you prune, try selective thinning, where you remove entire branch sections, either to a fork or to the ground, to open up the bush. It’s harder, scratchier work, but results in a more natural shape.

Some desert trees should be pruned later in the summer (as opposed to spring) to prevent excessive growth. Now is a good time to thin Mesquites, Ironwoods, and Palo Verdes.

So, with that information, there’s probably less pruning to do than you thought. Perhaps just some thinning of a few plants that have grown more than you wanted during our rainy season.

Dormant for the summer–summer break!

Seasons

Most of the United States enjoys the growing season during the summer months. Unlike the rest of the country, plants in Arizona survive the heat by going dormant during the hottest part of summer. This means you can take a break from landscaping and just enjoy the yard. It’s nice to not have to do yard work when the temperature is over 100 degrees.

Watch your plants for signs of stress indicating they aren’t getting enough water. When prickly pear pads start to wrinkle or leaves start to die, your plant may need a drink. Keep in mind that some plants like ocotillo and palo verde lose their leaves as part of dormancy and are not dying.

Ocotillo dormant

Ocotillo losing leaves

Palo verde in June

Palo Verde in June

Desert marigold dormant

dormant desert marigold

After kicking back for the summer, you’ll enjoy getting back to work in the fall.