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The Neighborhood Gardener – March 2012

oakleaf hydrangeaThis month in The Neighborhood Gardener:

  • Pest Alert: Downy Mildew on Impatiens — In late 2011, the downy mildew disease of garden impatiens was found in Palm Beach County. The disease has the potential for widespread and rapid destruction of this very popular bedding and potted plant. At this time only New Guinea impatiens and Sunpatiens show resistance.
  • Home Canning and Food Presentation – Ever have extra food from your garden or farmers market? Save it for a later date by canning your extras at home. Just make sure that you do it safely and correctly so that you don’t end up with food safety issues.
  • Plant of the Month: Oakleaf Hydrangea — If you need a shrub that can shine in the shade, this native shrub could be just what you’re looking for. Each spring, oakleaf hydrangea puts up huge cone-shaped clusters of white flowers that will stay on the plant for months, eventually changing to a light pink or purple. Oakleaf hydrangea will perform best if planted in a fertile, well-drained soil, but it will also tolerate other conditions.
  • March in Your Garden – This is a good time to prune many trees and shrubs. Cold damaged shrubs can be pruned back to where new growth appears. Fertilize lawns after all chance of frost is past since fertilizing too early can damage the lawn. Choose one with little or no phosphorus unless a soil test indicates the need for it, and avoid “weed and feed” products. A fertilizer with controlled release nitrogen will give longer lasting results.
  • Friend or Foe? Foe: Mile-a-Minute — Commonly called mile-a-minute, climbing hempweed, Chinese creeper, or bittervine, Mikania micrantha is on both the Federal and Florida state noxious weed lists. As a rapidly growing climbing vine, it has been observed to grow almost two feet per week under optimal conditions, smothering small plants and even large trees. Mile-a-minute was recently found in Miami-Dade County.

Read the full March issue.

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