Gardening Tips for September for Louisville, KY

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Southeast Region

  • Continue to harvest peppers and tomatoes and start keeping an eye out for possible frost.
  • Harvest herbs and store in a cool, dry place.
  • Clean out your vegetable garden once the plants have stopped producing. Remove any that were susceptible to disease and insects.
  • This month usually brings mild weather. Plant or transplant cool-weather crops such as beets, broccoli, cabbage, carrots, collards, lettuce, mustard, onions, radishes, spinach, and turnips.
  • With new transplants, be sure to water deeply (not lightly) every morning.
  • Add organic matter to all planting areas. Be sure there’s an inch-thick layer of mulch on your garden beds to control weeds.
  • Add leaves and organic material to your compost pile.
  • Cut back and remove old flower stalks from your annuals. Refertilizer them to encourage one more color before the winter.
  • Start preparing your flower beds for the planting of cool-season annuals.
  • Now is a good time to plant woody ornamentals because they have time to establish themselves before the spring.
  • Divide and replant perennials and bulbs that have become overcrowded or too large.
  • No more pruning your shrubs or trees, unless it is necessary. Pruning may encourage new growth to occur, which might be damaged during the winter.
  • Divide and replant crowded perennials. This is the last month to plant any new perennials and biennials.
  • Move your houseplants back indoors.
  • For healthy grass, avoid weed and feed products. Only apply herbicides to areas with weed infestations.
  • Fertilize lawns this month. Use a controlled-release nitrogen.
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