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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.

Prune ornamental shrub to its natural form

When an ornamental shrub is pruned, the end result shouldn’t be obvious. The end result, just like a good haircut, should be a plant growing in its natural form. Pruning plants this way is a lot less work and done much less often.

 
Late-winter freezes can damage plants

This winter, the valley hasn’t had any freezing temperatures at lower elevations. But let’s not forget about chilling injury (damage occurring somewhere around 50 to 45 degrees Fahrenheit) in new growth and fruits of tropical plants like tomatoes.

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True bottle tree different than nursery version

The bottle tree you are buying from the nursery — Brachychiton populneum — is not really a bottle tree at all. The true bottle tree (B. ruprestis) is very different from the nursery version because its trunk is truly shaped like a bottle. I

Pruning wounds begin healing minutes after cut

Major pruning of ornamental trees and shrubs is done during the winter months after leaves have fallen. Minor pruning (making a single cut with a hand pruner) can be done anytime.

‘Exotic’ plants are difficult to grow in Southern Nevada

The gardening trend seen most often now in Southern Nevada is growing “exotic” plants, those plants that don’t naturally grow here or are difficult to grow here. But these exotic plants require more effort and money on our part to ensure their good health.

Cactuses not all the same, shouldn’t be treated same way

Cactuses and other succulents are as varied in their needs as different types of landscape trees and shrubs. We can’t help but think of a cactus as just a cactus, but they are not all the same and shouldn’t be treated the same way.

Deciduous trees, shrubs drop leaves in cold temperatures

Most leaf drop of deciduous trees and shrubs occurs by mid-December. Some plants will start dropping leaves as early as the second week of November while others drop leaves later. But of course, much of that depends on the weather and tree health.

Wait until spring to prune pomegranate trees

To increase the size of pomegranate fruit, focus on pruning, applying fertilizer and watering enough so the plant doesn’t get droughty. Right now, because it is late fall and it is getting colder, there is nothing to do.

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