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Sanitation, pruning key to removing diseased parts of plant

Q: We have lost a tremendous section of our garden. In researching, it appears fire blight disease is the problem. Our red-tip photinia was the first and, in a very short time, it looked as if someone had taken a flame thrower to the plants. Euonymus hedges, flowering pink hawthorn and some rose bushes are starting to show the same problem.

Lawns shouldn’t be watered at night during hot months

Hot weather favors lawn diseases common here. Now is an optimum time for controlling lawn diseases before they in get into full swing. If your lawn had disease in the past, now is a good time to apply a fungicide. Fungicides are primarily preventive and work best when they are applied before the disease rears its ugly head.

Gardening: Warm-season vegetables need protecting right now

Historically, the last frost date is March 15 in the Las Vegas Valley. Planting warm-season vegetables before this date, such as tomatoes, peppers and eggplant, can be a bit risky because of a chance for frost.

Older oleanders can handle heavy pruning

You had an article a while back about trimming oleander down before spring. I have five in my backyard and have never done that. I am afraid to trim them down.

Shade, water add up to make powdery mildew

Powdery mildew of grapes is also a problem if there is not enough air movement through the vine or past the bunches so they dry. It is best if the vine is growing in full sun.

April is best time in desert to deploy pheromone traps

I was reading about your use of pheromone traps for insect control in fruit trees. Which traps do you use, and when do you put them out?

Rosemary thrives in desert Southwest

Is there a difference between rosemary used for cooking and rosemary used in landscaping?

Borers spend larval stage tunneling inside trees

I have a major borer problem with my nectarine tree. I will be removing it and replanting. Do I need to treat the soil before I plant another tree?

Succulent dieback can happen due to overwatering

A friend of mine is having trouble with his century plants, agave and cactuses turning yellow in June and July. These plants are in a rock yard with hand watering. They are 2 years old.

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