Porterweed Dwarf Blue #3 Care Guide

Introduction

Porterweed Dwarf Blue (Stachytarpheta jamaicensis) is a compact Florida native perennial producing long, slender spikes of small blue-purple flowers nearly year-round. It is an easy warm-season plant that thrives in Florida's heat and humidity and is one of the top butterfly-attracting plants available. Available in a #3 container.

Growing conditions

• Light: Full sun to partial shade; best flowering in full sun.
• Water: Low to moderate; drought-tolerant once established.
• Soil: Well-draining soil; tolerates poor, sandy soils.
• Fertilizer: Little to no fertilizer needed; excess fertilizer reduces flowering.
• Season: Warm-season perennial; blooms nearly year-round in Florida.

Planting tips

Plant in a sunny, well-drained location. Excellent for butterfly gardens, borders, and naturalistic plantings. Prune lightly to encourage bushier growth and more blooms. One of the most important butterfly nectar plants for Florida, especially for swallowtails and skippers.

Troubleshooting

Frost damage

Foliage dies back in freezing temperatures. Cut back damaged growth in spring; roots typically survive and resprout.

Root rot

Overwatering or poor drainage. Reduce watering and ensure soil drains freely.

Leggy growth

Insufficient light. Move to a sunnier location and prune back to encourage compact growth.

Pet safety

Porterweed is non-toxic to pets and is generally considered safe around dogs and cats.

Quick care summary

Difficulty: Easy. Light: Full sun to partial shade. Watering: Low to moderate, drought-tolerant once established. Humidity: Low to moderate. Pet safety: Non-toxic.