Things To Do in December

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  • Purchase poinsettias early in the month.
  • Continue to plant Winter vegetables.
  • Cut off flower spikes that have bloomed from dwarf foxgloves and delphiniums.
  • Don’t prune your indoor tropicals.
  • Prune grapes, low-chill raspberries, and native plants.
  • Prune wisteria by cutting off unwanted long twiners. Prune roots of vines that fail to bloom.
  • Mow cool-season lawns, including Bermuda that’s overseeded with Winter ryegrass.
  • Do not mow warm-season lawns, except St. Augustine (if it continues to grow).
  • Continue fertilizing cymbidiums until flowers open.
  • Feed cool-season flowers with a complete fertilizer for growth and bloom.
  • Feed shade plants for bloom; give adequate light.
  • Feed cool-season lawns, but don’t feed warm-season lawns (except for Bermuda that’s overseeded with Winter ryegrass).
  • Don’t water succulents growing in the ground.
  • Keep cymbidiums damp but not soggy.
  • Remember to keep all bulbs, especially potted ones, well watered.
  • Water dichondra if rains aren’t adequate.
  • Turn off the irrigation systems of all other types of warm-season lawns once they have gone brown.
  • Spray peach and apricot trees for peach leaf curl if you didn’t do so in November.
  • Protect cymbidiums’ bloom spikes from snails.
  • Control rust on cool-season lawns by fertilizing and mowing them.
  • Control aphids with insecticidal soap and beneficial insects.
  • Prepare beds for planting bare-root roses next month.