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Bob Morris

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.

Getting poinsettia to bloom can be tricky

Q: I have had a large poinsettia since last Christmas. Is there a way to encourage blooms this year? It seems I read somewhere to put it into a dark place without water for a period of time. Anything you can tell me will help.

Compost ingredients must be balanced to produce heat

Q: I’m composting in plastic trash cans with holes. It’s taking a very long time to make compost, despite adding carbon to my grass clippings and kitchen waste. I water and turn it every few days. What am I doing wrong?

Prune fruit trees when leaves drop

Winter fruit tree pruning starts as soon as leaves drop from the trees. It’s easier to see the branching structure of the tree — I call it the tree’s “architecture” — after the leaves are gone. This is also the time for the major pruning of landscape trees and shrubs.

THE LATEST
Asparagus varieties from UC produce quality spears

Q: Do you have a recommended type or brand of asparagus that does well here in Southern Nevada? I read your blog, and you noted the purple varieties are sweeter, but do they grow as well as other types?

Shaded leaves can pull nutrients, energy from plant

Q: I cut the lower leaves off my artichoke plant a couple months ago per your suggestion. In fact, my son, who is a pretty good gardener, asked why I cut them off. He comes over and helps me with the vegetables and asked me why I did that.

Trees suffering from ash decline should be removed

Q: My Arizona ash tree is about 20 years old. Six or eight limbs have dried up and died within the last couple of weeks. Can you tell me the cause of this and what I can do to prevent more from drying up?

Not rotating vegetables causes decline in production

Q: After 17 years of growing tomatoes, I feel I have depleted most of the nutrients so I am going to dig it up, remove it and replace it with new soil. My idea is to lay down a layer of fruit pulp in a sufficient quantity and then cover with at least 12 inches of planter’s mix. I would do fish guts but I can’t find any quantity. By the 2018 spring planting season, I think I’ll have a super soil. What do you think?