Spring Garden Checklist – Southern Edition

Your month-by-month guide to a thriving, beautiful yard from March to May.

Spring in the South doesn’t tiptoe in — it bursts through the door. One week it’s chilly, the next your azaleas are stealing the show and your lawn is begging for attention.

Because our growing season starts earlier (and lasts longer), Southern gardens require a slightly different rhythm than northern landscapes. This checklist walks you through exactly what to do — and when — so you can stay ahead of weeds, pests, and summer heat.

Let’s dig in.

Early Spring (Late February – March)

This is your “wake up the garden” season.

1. Apply Pre-Emergent (Before Soil Hits 55°F)

If you do one thing this spring, let it be this.

Pre-emergent prevents crabgrass and other summer weeds before they sprout. In most Southern states, that means late February to early March.

  • Apply when soil temperatures approach 50–55°F
  • Water it in immediately
  • Do not disturb the soil after application

Southern tip: If you have new sod (installed last fall), confirm it’s well-rooted before applying.

2. Lightly Prune Spring-Flowering Shrubs (After Bloom)

Azaleas, camellias, and forsythia bloom on old wood.
Wait until immediately after they flower before pruning.

Remove:

  • Dead wood
  • Crossing branches
  • Light shaping only

Heavy pruning now = no blooms next year.

3. Cut Back Ornamental Grasses (If You Haven’t Yet)

If dormant plumes are still standing, cut grasses back to 6–12 inches before new growth emerges.

4. Refresh Mulch & Pine Straw

A fresh layer:

  • Suppresses weeds
  • Retains moisture
  • Instantly upgrades curb appeal

Keep mulch 2–3 inches deep and pulled slightly away from plant stems.

Mid-Spring (April)

Everything starts growing fast — including weeds.

5. Fertilize Warm-Season Lawns (After Green-Up)

Zoysia, Bermuda, and Centipede lawns should only be fertilized once they’re actively growing and fully green.

In most Southern areas: mid-to-late April.

Avoid fertilizing too early — it stresses turf.

6. Inspect for Pests & Fungal Issues

Southern humidity invites:

  • Aphids
  • Lace bugs (especially on azaleas)
  • Early fungal lawn patches

Walk your yard weekly. Catching problems early makes treatment simple.

7. Plant Heat-Loving Annuals

Once frost danger passes, plant:

  • Vinca
  • Pentas
  • Lantana
  • Angelonia
  • Zinnias

These thrive in Southern heat and humidity.

Late Spring (May)

Now we prepare for Southern summer survival.

8. Install or Check Irrigation

Before temperatures soar:

  • Test sprinkler zones
  • Adjust spray heads
  • Repair leaks
  • Consider drip irrigation for beds

Deep, infrequent watering encourages strong roots.

9. Feed Flowering Plants

Use a balanced slow-release fertilizer on:

  • Hydrangeas
  • Roses
  • Annual beds

Avoid overfeeding — especially with high nitrogen — or you’ll get leaves without blooms.

10. Edge & Define Beds

Crisp bed edges elevate your entire landscape.

Use:

  • A half-moon edger
  • String trimmer (carefully)
  • Manual trenching spade

Clean edges + fresh mulch = instant polish.

Bonus: Southern-Specific Must-Do’s

✔ Watch late frost dates (they sneak up on us)
✔ Prune hydrangeas according to type (bigleaf vs. panicle vs. smooth)
✔ Stay ahead of weeds — they grow year-round here
✔ Begin mosquito control before summer

Quick Spring Checklist

  • Apply pre-emergent
  • Prune spring bloomers after flowering
  • Cut back ornamental grasses
  • Refresh mulch
  • Fertilize lawn after green-up
  • Plant warm-season annuals
  • Inspect for pests
  • Check irrigation
  • Feed flowering plants
  • Edge garden beds

Final Thoughts

Spring in the South is generous — but it rewards those who stay just a step ahead.

If you tackle these tasks gradually from late February through May, your garden won’t just survive summer… it will shine straight through it.

A little preparation now means fewer headaches when the heat and humidity arrive.

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