• Apply ferti-lome Fire Blight Spray to help control and prevent blight on crabapple, pears and fruit bearing trees when they begin to bloomThis is the only opportunity to apply this prevention
  • Apply 3-4” of Marcum’s Gold Diamond Cedar to control weeds in beds.
  • Plant your container and Ball & Burlap (B & B) trees.
  • Plant onions, potatoes and cool season vegetables after night time temps stay above 30 degrees.
  • Get garden and flower beds ready to plant by rototilling Red Bud Compost into soil.
  • Pre-emerge with ferti-lome For All Seasons IIHi-Yield Turf & Ornamental Weed and Grass Stopper (a summer annual herbicide) or Sandbur and Crabgrass Preventer to turf areas through mid-March to prevent summer weeds such as crabgrass from germinating.

Soil Temperature, Winter and Spring Weeds: Soil temperatures determine when weeds emerge in winter and spring. Most weeds germinate after three consecutive days of 50 degrees soil temperature at a depth of 2 inches.  You may use the Mesonet web site for Oklahoma to monitor soil temperature ( They also have a free app for Apple and android phones.  Better to be sure by applying pre-emergent early rather than too late.

  • The month of March marks the first of four applications to fertilize your cool-season lawns (Fescue and Rye Grass) with Marcum’s Slow Release Fertilizer 18-6-12 or Milorganite. Other months for application include: May, October and November.
  • Apply ferti-lome Weed Free Zone, a post-emergent broadleaf herbicide, to cool and warm season lawns to control broadleaf weeds.
  • In mid-March seed cool-season turf grass or when daytime temps are between 55 and 70degrees. This time can be different each year.
  • Mow cool-season grasses at 1½ to 3¾ inches high.
  • Apply Wilt Stop to protect your small plants when temps are below 50 degree to add to your plant’s ability to better tolerate the cold.
  • High Yield Dormant (Oil) Spray may still be applied to all deciduous shrubs and tree while they are dormant to control mites, galls and over wintering aphids, etc.
  • Prune roses just before growth starts and use ferti-lome Rose and Flower Food with Systemic Insecticide as the foliage appears.  Use very six weeks for best flowers and insect control.
  • In late March, dethatch warm season lawns (Bermuda and Zoysia).
  • Note:  Thanks to Oklahoma Coop Extension Service for providing some of the suggested maintenance guidelines.  Recommended products suggested by Marcum’s may be purchased at all store locations.
  • For questions regarding March maintenance guidelines, please call Goldsby 405 288-2368, Oklahoma City 405 691-9100,  Norman 405 447-3100 or Ardmore 580 223-1846.