Master Gardener logo
Fresno Gardening Green
Article

This week in the garden: Oct. 25 - 31

Oak galls form in a wide variety of shapes and sizes on oak leaves, branches and twigs. (Photo: “Alternating generations; a biological study of oak galls and gall flies,” 1894, University of California Libraries)
Oak galls form in a wide variety of colors, shapes and sizes when chemicals produced by the larva of wasps are injected into oak leaves, branches or twigs. (Illustration: “Alternating generations; a biological study of oak galls and gall flies,” 1894, University of California Libraries)
The bumps on oak tree foliage and branches are galls caused by minute cynipid wasps, and do not harm people or the trees. 

Tasks

  • Cut warm-season grasses short and over-seed with cool season grasses – annual or perennial rye or fine fescue. Better yet – let them go dormant to save water and mowing.
  • Check and improve drainage around plants in low areas.
  • Add fallen leaves, chipped trimmings and garden debris to compost.
  • Remember that plants in containers or beds under covered areas may not receive adequate water from rainfall and may require supplemental irrigation in fall and winter.
  • Use organic mulch around permanent plants and add organic matter to the soil to prepare beds for spring planting.

Pruning

  • Dispose of diseased wood by discarding in the trash.

Fertilizing

  • Feed cool-weather plants and vegetables.
  • Add bulb fertilizer to planting holes before planting bulbs.

Planting

  • Tulip and hyacinth bulbs that have been chilled for 6 weeks may be planted now.
  • Sow wildflowers or grasses on hillsides to prevent erosion in heavy rains.
  • Perennials: coral bells (Heuchera).
  • Bulbs, corms, tubers: Hyacinthus orientalis.
  • Fruits and vegetables: cabbage, peas, spinach (plant from seed).
  • Annuals: toadflax (Linaria maroccana), stock (Matthiola incana).
  • Trees, shrubs, vines: Indian hawthorne (Rhaphiolepsis).

Enjoy now

  • Annuals and perennials: stock (Matthiola) African daisy (Osteospermum).
  • Fruit and vegetables: Asian pears, chard, nectarines, peas, peppers.
  • Trees, shrubs, vines: holly (Ilex), Chinese fringe flower (Loropetalum), Nandina.
  • Fall color: crape myrtle (Lagerstroemia indica), sweet gum (Liquidambar).

Things to ponder

  • Do not use lime sulfur spray on apricots or walnuts.