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 4B has a short growing season — start seeds indoors when possible and use season-extending techniques like cold frames and row covers.
Good companions: lantana, marigolds, petunias
Avoid planting near: Shade and wet conditions
Ornamental; deadhead regularly to maintain bloom production
USDA Hardiness Zone 4B has an average last spring frost around May 1 and first fall frost around Oct 1. 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.