null Skip to main content
May Lawn & Garden Tips

May Lawn & Garden Tips

Posted by Grange Co-op on 1st Apr 2013

ThinkstockPhotos-468462082_pink-azalea-blooms_resize Flower Beds:

  • Fertilize rhododendrons and azaleas;
  • Remove spent blossoms.
  • Plant chrysanthemums for fall color.
  • Plant dahlias in mid-May.
  • Fertilize roses and control rose diseases such as mildew with a fungicide.


  • Monitor strawberries for spittlebugs and aphids with approved pesticides.
  • Control cabbage worms in cabbage and cauliflower.
  • Tiny holes in foliage and shiny, black beetles on tomato, beets, radishes, and potato indicate flea beetle attack.
  • Mid-May, transplant tomato and pepper seedlings.
  • PLANT snap and lima beans, brussels sprouts, cantaloupes, slicing and pickling cucumbers, dill, eggplant, kale, peppers, pumpkins, summer and winter squash, onions, potatoes, tomatoes, watermelon.


  • Spray cherries, plums, peaches, and apricots for brown rot blossom blight, if necessary.
  • Place pheromone traps in apple trees to detect presence of codling moth.


  • Lawn mowing: set blade at 0.75 to 1 inch for bentgrass lawns; 1.5 to 2.5 inches for bluegrasses, fine fescues and ryegrasses.


More resources: