May To Do’s

Lawn Care:
  • Fertilize this month, before the summer heat. Apply a fast release fertilizer (Gill Lawn and Garden 13-1-3) or slow release (Green Diamond 21-7-14), to your lawn.  Water in well.  (approximately 30 minutes per area)
  • Organic fertilizers such as Milorganite, Lady Bug Lawn & Garden and Medina Growin’ Green are excellent fertilizers that feed plants and the soil
  • Prevent Broad Leaf Weeds with Greenlight Amaze, or Hi Yield Weed Control With Dimension
  • Lay new sod anytime, and Bermuda seed anytime this month, Plan to water!
  • Established lawns, continue watering if we don’t have rain (Follow the cities watering guidelines.)
  • Apply Ironite or Hi Yield Iron Plus to yellow spots in lawn, organically with Texas Green Sand

Late spring, summer blooming annuals and perennials:

  • For sunny areas, try zinnias, periwinkles, moss rose, purslane, lantana, blue daze, false heather, salvia, ice plant, gomphrena, ruellia, coreopsis, and pentas
  • For shady areas, try caladiums, coleus, begonias, ageratum, shrimp plant, torenia, agapanthus and snowbush


  • Morning glory, moonflower, zinnias, sunflowers, gomphrena

All container grown:

  • Hardy and tropical trees, shrubs, vines, grasses, groundcovers, and citrus trees
  • Tomato and pepper plants regularly.  Use High Yield 21-0-0 (ammonium sulfate) or Miracle Gro For Tomatoes, organically with Rose Glo or Hasta Gro, or Plant Tone
  • Annuals and perennials, with Miracle Gro or Osmocote Time Release Granules, organically with Medina Growin Green, Lady Bug Lawn and Garden, or Hasta Gro
  • Your azaleas, gardenias, and magnolias with Azalea Food or Miracle Gro ACR for acid loving plants, organically with Maestro Gro-Rose Glo, or Texas Green Sand
  • All roses with Rose Food or Bayer Rose & Flower Care, organically with Maestro Gro-Rose Glo
  • All hibiscus and tropical bloomers with Green Diamond Hibiscus Food, organically with Maestro Gro-Rose Glo
  • All trees and shrubs with Gill Lawn and Garden Fertilizer, Green Diamond Supreme Lawn Food, organically with Milorganite, Medina Growin Green or Lady Bug Lawn and Garden
  • All granular fertilizer should be watered in well
  • All early spring bloomers if not already done, such as azaleas, indian hawthorn and carolina jessamine
  • Trim hedges as needed to maintain good form
  • Poinsettias to approximately 12” tall
Watch Out For:
  • Fungus, Powdery Mildew – Daconil, organically with Neem Oil, or Serenade
  • Chinch bugs in lawns – treat with Spectracide Triazicide, or Bayer Complete Insect Control liquid or granule, Cyonara, organically with Diatomaceous Earth, or Pyrethrin
  • Grub worms – use Bayer Complete, Spectracide Triazicide, Season Long Grub Control, organically with Pyrethrin, or Nematodes
  • Mealy bugs – treat with Liquid Sevin, Spectracide Triazicide or Bonide Systemic, organically with Neem Oil, or Pyrethrin
  • Spider mites – use Spectracide Triazicide, or Bonide Systemic, organically with Neem Oil, or Spinosad
  • Fleas and ticks – treat lawns with Cyonara, Spectracide Triazicide, organically with Spinosad, or Diatomaceous Earth Crawling Insect Killer, or Beneficial Nematodes
  • When watering during periods of windy dry conditions, it’s important to water slow and deep.  Be sure to watch the spray of your sprinkler and adjust accordingly with the wind
  • Water all plants well after planting and regularly through the first year
  • Plants will begin to use more water as they grow and bloom.  Outdoor potted plants dry out quickly as do hanging baskets and small annuals
  • Apply mulch around trees, flowerbeds and vegetable gardens to reduce weeds and help retain moisture.  We like cypress, hardwood and pinestraw mulch.  These reduce weeds well and will not float away.

9 Comments on “May”

  1. Art, I responded to this question on your email, but it was pointed out to me that other people would like to know also. If you are putting down an insecticide preventatively, Bayer Season Long can be applied in May and will protect you through the whole summer. If you choose to go IPM (integrated pest management, least toxic means) you can apply Beneficial Nematodes now, and observe closely for any early signs of grub damage occurring in August (localized wilting of lawn despite adequate soil moisture, and finding grubs in this area) and treat only these spots and a few feet beyond with Bayer Complete.

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