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This week in the garden: Dec. 27 - Jan. 2

It is peak season for harvesting citrus in the San Joaquin Valley. Enjoy! (Photo: Wikimedia Commons)
It is peak season for citrus in the San Joaquin Valley. Enjoy! (Photo: Wikimedia Commons)
A wide variety of citrus fruits brighten winter gardens and winter menus this month.

Tasks

  • Control cool-season weeds before they mature and go to seed.
  • Plants planted last spring and fall may need water if rainfall has been inadequate.
  • Run sprinklers periodically through their cycles to maintain clean lines and to exercise the valves.

Pruning

  • When harvesting blooms for arrangements, make cuts with an eye toward shaping the plant.
  • Prune and shape dormant deciduous plants – shrubs and perennials.
  • Cut away 50% of last year's growth on peaches and nectarines.
  • Remove leaves from roses in January to force the plant into dormancy. This is not necessary with shrub or ground cover roses.

Fertilizing

  • Apply nitrogen fertilizer to citrus trees prior to bloom.
  • Always read labels carefully before applying fertilizer. Use only if necessary.

Planting

  • Bare root planting season continues.
  • Peas (both edible and decorative varieties) can be planted this month. Before planting, soak dried peas between damp paper towels in a shallow dish. Cover loosely with plastic and keep towels moist. Plant seeds when they're just beginning to sprout.

Enjoy now

  • Annuals and perennials: Primrose (Primula polyantha), English primrose (Primula vulgaris), pansy (Viola), sweet violet (Viola odorata), Poinsettia (Euphorbia pulcherrima).
  • Bulbs, corms, tubers: squill (Scilla bifolia), ‘Paper White' narcissus (Tazetta daffodils).
  • Trees, shrubs, vines: Anthony Waterer spirea (Spiraea japonica), bridal wreath spirea (Spiraea prunifolia).
  • Fruits and vegetables: lemons, navel orange, parsley.

Things to ponder

  • Frost is possible when it is clear enough to see the stars. Remember to leave frost-damaged foliage until danger of frost has passed. Prune later if needed.
  • Remove fallen camellia blooms promptly to prevent petal blight on next year's flowers.