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Fresno Gardening Green
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This week in the garden: Jan. 31 to Feb. 6

Lenten rose blooms early in Fresno County. Enjoy now! (Photo: Jeannette Warnert)
Lenten rose blooms well before the beginning of Lent in Fresno County. Enjoy now! (Photo: Jeannette Warnert)
Try grafting new fruit tree varieties onto your existing trees. Fruit of the same species are easily grafted together - peach onto peach, plum onto plum.

Tasks

  • Irrigate citrus and almonds at night if frost is expected.
  • Apply pre-emergent herbicide in early February to flower beds and water-permeable paths.
  • Provide frost protection. Move or cover tender plants. Use floating row covers or fabric and uncover plants during the day. Plastic is not recommended.

Pruning

  • It is now or never for pruning hydrangeas. Remove a third of the old wood for maximum bloom.
  • Prune evergreen shrubs such as pittosporum, podocarpus, euonymus, lavender, sage, buddleja, rosemary.

Fertilizing

  • Apply one third of the needed annual amount of fertilizer to fruit, nut and citrus trees. They need feeding two to three weeks before bloom.
  • Fertilize annuals and perennials that were planted in the fall.

Planting

  • Make certain a plant's basic sun and shade needs are considered before planting.
  • Bare root planting season ends in early February.
  • Perennials: Lenten Rose (Helleborus), Salvia ‘Rose Pink' (Salvia greggii), Euphorbia ‘Ascot Rainbow,' Euphorbia ‘martini'.
  • Perennial Grasses: Needle Grass (Nassella), Pink Muhly (Muhlenbergia capillaris), purple fountain grass (Pennisetum setaceum ‘Rubrum').
  • Fruits and vegetables: potatoes and rhubarb.
  • Annuals: phlox drummondii, plant from seed.
  • Trees, shrubs, vines: sweet gum (Liquidambar), Chinese pistache (Pistacia chinensis), Chinese tallow (Sapium sebiferum).

Enjoy now

  • Annuals and perennials: annual phlox drummondii, sweet peas.
  • Bulbs, corms, tubers: hyacinth (Hyacinthus).
  • Trees, shrubs, vines: forsythia.
  • Fruits and vegetables: navel oranges, spinach, chard.

Things to ponder

  • In years when rainfall is below normal, consider planting drought tolerant plants. Look for native or Mediterranean labels.
  • When forsythia begins to bloom, apply pre-emergent herbicide to your lawn to prevent crabgrass.