June Gardening Guide for South Louisiana (Zone 9a)

What to Plant, Prune, and Watch For in Lafayette, Scott, Broussard & Acadiana

South Louisiana sits officially in USDA Zone 9a, with winter lows between 20°F–25°F.

However, many parts of Acadiana — especially urban Lafayette, Scott, and areas near Vermilion Parish — behave like warm 9a or borderline 9b microclimates.

That means:

• Most Zone 9a plants thrive here
• Many Zone 9b tropicals also do well
• Cold-sensitive plants still need protection during rare freezes
• Our summers are long, hot, and humid — perfect for heat lovers

This guide is built specifically for Lafayette and the surrounding Acadiana region, where June heat and humidity shape everything you plant.

🌱 What to Plant in June (Heat-Loving Winners)

June is hot — but plenty of plants love this weather.

Heat-Tolerant Annuals

These thrive in 90°+ heat and full sun:

• Lantana
• Pentas
• Vinca (Periwinkle)
• Marigolds
• Zinnias
• SunPatiens (for part sun)

Summer Vegetables

Still safe to plant early in the month:

• Okra
• Peppers
• Eggplant
• Cucumbers
• Sweet potatoes

Shrubs That Handle the Heat

Great for new installs in June:

• Sunshine Ligustrum
• Dwarf Yaupon Holly
• Loropetalum
• Drift Roses
• Wintergreen Boxwood

Palms & Tropicals (Great for Warm 9a/9b Pockets)

June is prime time for palms:

• Pindo Palm
• Sabal Palm
• Windmill Palm
• Sago Palm
• Hibiscus
• Mandevilla

Warm microclimates in Lafayette help these thrive.

✂️ What to Prune in June

June is a “light pruning” month — not heavy cutbacks.

Safe to Prune

• Azaleas (finish pruning by late June so they set buds for next spring)
• Crape Myrtles (light shaping only — no “crape murder”)
• Hedges (boxwood, holly, ligustrum)
• Spent blooms on roses and perennials

Avoid Heavy Pruning

• Citrus
• Palms
• Hydrangeas
• Anything stressed from heat

Heavy pruning in June can shock plants.

👀 What to Watch For in June (Louisiana Problems)

June is when the heat, humidity, and pests kick in.

1. Sod Webworms

If your St. Augustine or Zoysia looks “chewed,” you may have webworms.

Look for:

• Moth activity at dusk
• Patchy brown spots
• Grass blades eaten down

2. Plumeria Rust

Very common in Acadiana.

Symptoms:

• Orange powder on leaves
• Yellowing
• Premature leaf drop

3. Heat Stress in New Plants

Signs:

• Wilting in the afternoon
• Crispy leaf edges
• Slow growth

4. Overwatering (Common in Clay Soil)

South Louisiana clay holds water.

Watch for:

• Mushy soil
• Yellow leaves
• Fungus gnats

5. Fungal Issues After Afternoon Storms

Especially on:

• Roses
• Hibiscus
• Hydrangeas
• Lawns

💧 Watering Tips for June in Lafayette

June heat + humidity = careful watering.

• New plants: daily for 7–10 days
• Established beds: 2–3 times per week
• Lawns: deep watering, not daily
• Best time: early morning - Avoid watering during the hottest part of the day — it evaporates instantly.

🌿 Fertilizing in June

June is the second major feeding of the year.

Fertilize:

• Shrubs
• Palms
• Lawns
• Flower beds

Use slow-release fertilizer so plants don’t burn in the heat.

Do NOT fertilize:

• Stressed or wilted plants
• Newly planted shrubs (wait 4–6 weeks)

🐞 June Pest Watchlist

Common Acadiana pests this month:

• Aphids
• Whiteflies
• Scale
• Spider mites
• Chinch bugs
• Sod webworms

If you see leaf curling, sticky residue, or tiny webs — you likely have pests.

🌤️ Lafayette-Specific June Challenges

South Louisiana has unique conditions:

• Heat index over 100°
• Clay soil that stays wet
• Afternoon thunderstorms
• High humidity that encourages fungus
• Full sun that scorches new plants

This guide is built specifically for our climate — not generic national advice.

⭐ Need Help With June Planting or Maintenance?

Beau Monde Nursery & Landscape provides:

• Plant installation
• Palm installation
• Flower bed maintenance
• Seasonal color
• Sod installation
• Commercial & residential maintenance
• Garden center retail

Call Beau Monde Nursery Landscape & Florist for expert planting and maintenance in Lafayette and surrounding Acadiana communities.

Serving Lafayette, Scott, Broussard, Youngsville, Carencro, Duson, New Iberia, Breaux Bridge, Maurice, and all of Acadiana.