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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.

African sumacs sometimes grow shoots from epicormic buds

Lumps or bumps on the trunk are probably epicormic nodules, places on the trunk covered by thin bark that have a cluster of buds under it. These buds will sometimes grow into shoots. On some trees removing these shoots as soon as they are seen may cause these nodules to stop producing shoots or fewer of them.

House, landscape create microclimate in yard

As soon as a house is built, the microclimate of its landscape is created. The landscape enhances this created microclimate. How the landscape is created can enhance or distract from this microclimate.

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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.

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.

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