Quick Answer: Start spring landscaping in Houston in early March — apply pre-emergent herbicide, cut back ornamental grasses, and edge beds first. Plant warm-season annuals and fresh mulch in April. Fertilize once soil temps hit 65°F.
March: Clean-Up & Prevention
- Apply pre-emergent herbicide — critical in Houston to stop summer weeds before germination
- Cut back ornamental grasses — trim Gulf muhly and others to 4–6 inches before new growth
- Remove winter annuals — pull pansies and snapdragons; prep beds for warm-season color
- Edge all beds — clean edges immediately improve the entire landscape's appearance
- Inspect irrigation — turn on every zone and check for broken heads, leaks, and proper coverage
April: Plant & Feed
- Install warm-season annuals — pentas, vinca, begonias, and purslane for Houston heat
- Fertilize lawn and beds — slow-release fertilizer once soil temps hit 65°F consistently
- Fresh mulch — 2–3 inches retains moisture, moderates soil temp, and makes beds look sharp
- Plant tropical color — Houston spring is perfect for hibiscus, bougainvillea, and mandevilla
- Trim crape myrtles — light shaping only; never top them
May: Monitor & Maintain
By May the Houston heat is arriving. Watch for aphids, spider mites, and chinch bugs. Water deeply but infrequently — 1 inch per week for most landscapes. Established plants may need less.
| Month | Priority Tasks |
|---|---|
| March | Pre-emergent, cut grasses, edge beds, check irrigation |
| April | Plant annuals, mulch, fertilize, tropical color |
| May | Pest monitoring, deep watering, summer annual top-off |
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