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Question of the week

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Q. I’ve got black spot on my photinias and powdery mildew on my roses. What should I do?

A. For a homemade recipe, visit John’s Formulas for his baking soda solution. You can also use potassium carbonate, which is available at many nurseries. Commercial products include Rose Defense, which contains neem oil, and Dyna-Gro, which is pure neem. If you’ve had problems with a plant in the past, go ahead and spray now as a preventive. Be sure to hit the undersides of the leaves as well as the tops.

Remove as many infected leaves as you can from the plant and the ground. To promote fungal-free health, apply compost and mulch around the plants and thin out the plant (when possible) to improve air circulation.



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Plant of the week

Photo: Crossvine "Tangerine Beauty'Bicolor Sage (Salvia sinaloensis)

Salvias are among the most versatile and useful groups of blooming perennials we have for our central Texas landscapes. Bicolor Sage makes an attractive groundcover reaching only 6-12 inches in height.

Its small blooms are an intense royal blue rising on spikes above the dark
green foliage with a burgundy tinge. This salvia does best in a part shade location and is especially appreciative of a break from the hot afternoon sun.

Plants may be set about a foot apart to form a groundcover or used individually in the nooks and crannies of a rock
garden. It is also attractive spilling over the sides of a mixed container planting. Bicolor sage dies back in winter to return again in spring.


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Planting tips of the week
  • Plant beans, tomatoes, peppers, pumpkins, squash, melons, corn, and cucumbers.
  • Fertilize perennials and mulch. Hold off on fertilizing the lawn until the weeds are gone for sure. Plan now to avoid brown patch by not using too much fertilizer or water this growing season.
  • Check out our events section for upcoming festivals and plant sales!

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