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Bob Morris

Gardening columnist

Bob Morris is a horticulture expert and professor emeritus of the University of Nevada, Las Vegas. Visit his blog at xtremehorticulture.blogspot.com.

The Latest
Watering terms can be confusing in Southern Nevada

As we water plants infrequently, the roots extract water and grow into deeper layers of soil. Deep rooting of plants is the main reason good gardeners say, “Water plants deeply but infrequently.”

Buying privacy plants? Always consider height

Privacy shrubs should be tall enough to create the privacy needed but not much taller. Bigger shrubs need more water than smaller shrubs, and they need more maintenance as they get older.

Lack of water can cause leaf drop in trees

California pepper tree is evergreen. Evergreen plants constantly drop leaves all season long but drop their leaves heaviest soon after times of new growth.

To stop fruit production, spray tree when flowers open

To prevent fruit production in an ornamental tree, spray the it with a chemical every year to get the fruit to drop when it’s still small. Spray the entire canopy of the tree when as many of the flowers are open as possible.

Colorful flowers will attract butterflies in spring, fall

When making a spot that attracts butterflies, choose a warm location out of the wind. Choose flowers in yellow, orange, red and pinks that bloom in spring or fall when it is cooler, and plant them in large numbers.

Good time to look for borers is after rainfall

Right after a rain is a good time to look for borers feeding in the moist cambium of fruit trees. It’s a good time to get out a sharp knife, sanitize and sharpen it, and remove these borers before they cause more damage.

Thermometer better than phone app good at predicting freeze

Phone apps are good for predicting a possible freeze, but nothing replaces verification that an actual freeze happened. Maximum/minimum thermometers are a good bench check against your phone app or the National Weather Service predictions.

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