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Plant library

Herb · Warm season

Rosemary

Rosemary

Rosemary: crop reference photographCrop reference
Sun

Full sun; at least 6–8 hours of direct sunlight daily.

Water

Water new transplants when the top inch dries. Once established, allow the upper 1–2 inches to dry before watering deeply; skip irrigation after rain. Excellent drainage is essential; do not keep the root zone constantly wet.

Spacing

18–24 in

Difficulty

Easy–Moderate

Planting and care

How to grow rosemary

When to grow

Warm season · Woody perennial

How to start

Rooted nursery transplant

Mature size

2–4 ft tall and wide; cultivar-dependent

Time to harvest

Light sprig harvest about 30–60 days after transplant once new growth is strong; allow the first season for establishment.

Feeding needs

Light feeder

Growth habit

Large Herb

How to prune

Shape lightly in spring after new growth begins. Snip flexible green tips above a leaf node; do not cut old bare wood, which may not resprout. Avoid hard pruning late in fall.

How to harvest

Snip small leafy sprigs with clean scissors after dew dries. Take no more than about one-third of growth at once and leave healthy green foliage on every retained branch.

Harvest and kitchen use

Aromatic leaves for roasts, potatoes and breads; remove tough stems before serving.

Nutrition and garden value

Aromatic herbs provide flavor and small amounts of vitamins/phytonutrients

High customer value in small space; flowers on many herbs support pollinators/beneficial insects

Common challenges and troubleshooting

Bolting, winter injury or root rot varies by herb