Growing Verbena in Zone 3B

Verbena is a heat-loving, butterfly-magnet annual that covers itself with clusters of tiny flowers all season long — ideal for hot spots and containers.

Zone 3B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.

Top Growing Tips

• Needs excellent drainage — root rot is common in wet soils
• Trailing varieties are spectacular in hanging baskets
• Deadhead or shear back by one-third mid-season to refresh
• Butterfly magnet — especially swallowtails and monarchs
• Extremely heat and drought tolerant once established

Companion Planting

Good companions: lantana, marigolds, petunias

Avoid planting near: Shade and wet conditions

Harvest Timeline

Ornamental; deadhead regularly to maintain bloom production

About Zone 3B

USDA Hardiness Zone 3B has an average last spring frost around May 15 and first fall frost around Sep 15. All planting dates above are calculated from these frost dates. Your specific location may vary — check with your local extension office for the most accurate dates.