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Bob Morris

Bob Morris is a horticulture expert living in Las Vegas and professor emeritus for the University of Nevada. Visit his blog at xtremehorticulture.blogspot.com. Send questions to Extremehort@aol.com.

Prune flowering shrubs just after a bloom

Question: When is it best to prune crape myrtle? I’ve heard before winter and again just before spring. The last two years, I trimmed back the branches (it is only about 5 feet tall) about one-third of the way in late February. What is right? We live in Aliante.

Taste best way to tell if lemon is ripe

Q. How do I determine the best time to pick lemons? Mine are yellow with some being very firm and others feeling “givey.” This has been a good year and my Meyer lemon “bush” will afford us lemon curd and juice for the next year.

Be gentle with au naturel trees

Question: This question is regarding our bottle tree. Should we trim and shape the tree? It has grown to a considerable height. The wind, appearance, and health of the tree are our concerns. Does the cracking on the trunk need addressing? And should I wrap the trunk in winter?

No need to fertilize bougainvillea in this climate at this time of year

Q . Before the first freeze in Las Vegas what should I feed my bougainvillea? I have three plants, all in the ground. They are 6 years old and I wrap their bases before the freeze. They always come back come March and bloom beautifully August through October.

Non-desert trees in lawns require deep watering

Question: I had a 3-year-old mesquite tree in my front yard that just blew over in the wind today. The landscapers planted it in the grass without a drip system. I was told watering the lawn would be enough for the tree. Today, the landscapers told me it fell because of the roots being at the surface. Do you recommend putting in the drip line for a new tree?

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Dethatch lawn now before it gets colder

Q: Is it too cold to dethatch my Bermuda grass lawn? Do I have to wait until next year? What about overseeding? Is it also too late? If I need to wait, then when?

Pistachios appreciate desert climate

Question: We are considering planting a couple of pistachio trees. Is this a good move? If so, should we plant them in full sunlight or in a spot that gets sun only part of the day?

For a thriving hive, give bees plenty to work with

Question: Do you have any suggestions on fruit trees for the Amargosa Valley area? I have an apiary out there, so I try to plant things that are good for the bees but that will survive the heat and cold.

Pomegranates can vary in color – inside and out

Q: I planted a pomegranate tree two years ago and this year it produced six fruits. One was of decent size while the others were on the small side. When the large one split, I picked it only to find the inside was light pink. The seeds were well-developed but not the expected red color.

Miniature trees work better in containers

Question: I’m super excited to order some fruit trees this year from the University of Nevada Cooperative Extension Orchard, but it only makes sense for us to have them in large containers. Which varieties would do well in containers?

Area weather sours ability to grow sweet cherries

Q: I heard about a cherry tree from the Dave Wilson Nursery website that has very low chill hours. Can we order these from the University of Nevada Cooperative Extension Master Gardener Orchard?

Apple production time varies

Question: I live in Summerlin and have a Bartlett pear tree. I wish to plant an apple with a harvest time far from the Bartlett pear so I don’t have too much fruit at once. Which apple varieties would be best? I have received conflicting information from local sources.

Elberta peaches should fare well in valley

Q: We have an Elberta peach that we harvest in August and the fruit is always small and on the mushy side. Are there better peaches we can grow?

Older fig trees require more water

Question: I have one black mission and one white fig planted six years ago. The second crop of figs are small and easily fall off. I’m guessing they get 6 gallons every other day during the heat. Both trees grow very rapidly and are very healthy. What can be done to increase fig growth?

Rabbit-proof fences protect gardens, landscapes

As I promised, here is an abbreviated version of the problem and solutions to rabbit vandalism in residential landscapes.

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