May Garden Guide

gillnurseryMonthly Garden Guide2 Comments

Lawn Care

Fertilize this month, before the summer heat.

Apply a fast release (Gill Lawn & Garden 13-1-3) or slow release fertilizer (Green Diamond 21-7-14) to your lawn and water in well, approximately 30 minutes per area.

Organic: MilorganiteMedina Growin’ Green

Prevent broad leaf weeds.

Use: Hi Yield Weed Control with Dimension or Fertilome Broadleaf Weed Control with Gallery

Plant new grass.

Lay new sod or Bermuda seed anytime this month – plan to make time for watering!

Follow city watering guidelines.

Continue watering established lawns if we don’t have rain.

Read: City Watering Guidelines – Water Only Once a Week, Pick Your Day

Fix yellow spots.

Apply Hi-Yield Iron Plus to yellow spots in lawn.

Organic: Green Sand or Nature’s Blend


Sunny areas:

Zinnias, periwinkles, moss rose, purslane, lantana, blue daze, false heather, salvia, ice plant, gomphrena, ruellia, coreopsis, pentas


    Moss Rose

    Blue Daze


    Shady areas:

    Caladiums, coleus, begonias, ageratum, shrimp plant, torenia, agapanthus, snowbush.



      Shrimp Plant



      Morning glory, moonflower, zinnias, sunflowers, gomphrena.


        Morning Glory



        All container grown hardy and tropical trees, shrubs, vines, grasses, groundcover, and citrus trees.

        Read: Fruit Trees and Citrus in Your Own Backyard


        All granular fertilizer should be watered in well.
          Tomato & Pepper Plants

          Fertilize regularly with High Yield 21-0-0 (ammonium sulfate) or Miracle Gro for Tomatoes. Organic: Rose Glo or Hasta Gro, Plant Tone, or Medina Growin' Green.

          Annuals & Perennials

          Use Miracle Gro or Osmocote Time Release Granules. Organic: Medina Growin' Green, Rose Glo or Plant Tone, or Hasta Gro.

          Azaleas, Magnolias, Gardenias
          Use Azalea Food or Miracle Gro ACR for Acid Loving Plants. Organic: Maestro Gro-Rose Glo, Green Sand, or Espoma Azalea Food.

          Use Bayer Rose & Flower Care. Organic: Maestro Gro-Rose Glo.

          Hibiscus & Tropical Bloomers
          Use Hibiscus Food. Organic: Maestro Gro-Rose Glo.

          Trees & Shrubs

          Use Gill Lawn & Garden Fertilizer, Green Diamond Supreme Lawn Food. Organic: Milorganite, Medina Growin' Green.


          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

          Mealy Bug Damage

          Powdery Mildew

            Fungus, Powdery Mildew

            Use Broad Spectrum Fungicide. 

            Organic: Neem Oil, or Serenade.

            Grub Worms

            Use Bayer Complete, Spectracide Trazicide, Season Long Grub Control.

            Spider Mites

            Use Cyonara, Spectracide Triazicide, Bonide Systemic

            Organic: Neem Oil, Spinosad

            Lace Bugs on Lantana

            Use Cyonara.

            Read: Lacebugs on Lantana

            Chinch Bugs

            Use Spectracide Triazicide, Bayer Complete Insect Control liquid or granule, Cyonara

            Organic: Diatomaceous Earth, or Spinosad

            Read: Check For Chinch Bugs If Your Lawn Looks Dry Even Though You Know It’s Not!

            Mealy Bugs

            Use Spectracide Triazicide, Cyonara, or Bonide Systemic

            Organic: Neem Oil, or Insecticidal Soap

            Read: Mealy Bugs are Here

            Fleas & Ticks

            Use Cyonara, Spectracide Triazicide.

            Organic: Spinosad, Diatomaceous Earth

            Read: Got Fleas?


            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.

            Pine Straw Mulch

            Cypress Mulch

            Hardwood Mulch

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