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Fresno Gardening Green
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This week in the garden: May 24 - 30

Reduce conditions favorable to spider mites by providing adequate water for your plants and reducing dust on and around the leaves. (Photo: UC IPM)
Reduce conditions favorable to spider mites by providing adequate water for your plants and reducing dust on and around the leaves. (Photo: UC IPM)
I try to rely less and less on controlling nature. Instead I am learning to live with its chaos.

~ Mas Masumoto

Tasks

  • Monitor fruiting pear and apple trees for codling moth.
  • To control powdery mildew on grapevines, apply sulfur every 14 days until fruit begins to taste sweet. Do not treat if temperature exceeds 100°F.
  • When using herbicides for weed control, spray on a calm day and protect nearby plants by shielding with a large piece of cardboard.

Pruning

  • Pinch back annuals and perennials to encourage sturdy growth.
  • Remove spent lilac flower clusters just above points where leaf buds are forming.
  • Lightly prune lavender. Do not prune into the woody parts.

Fertilizing

  • Yellow leaves may be a sign of chlorosis, which can be treated with chelated iron.

Planting

  • Spring planting season is over. Keep recent plantings well-watered.
  • Postpone planting non-essential annual flowers, vegetables, and container plants until fall.

Enjoy now

  • Annuals and perennials: cosmos, dahlia, foxglove (Digitalis), coneflower (Echinacea), rockrose (Cistus).
  • Bulbs, corms, tubers: watsonia.
  • Trees, shrubs, vines: chitalpa, clematis, escallonia, smoke tree (Cotinus).
  • Fruits and vegetables: nectarine, peach, plum.

Things to ponder

  • Manage spider mites by rinsing dust from foliage.
  • To water hillsides, set emitters on the upper side of slope.
  • Grafting can be performed on citrus and avocado trees now.