Growing Guide: Rosemary

Our Rosemary plants are shipped in our Large 1 Gallon 6" biodegradable coconut coir planters that can be planted directly in the soil, promoting strong root growth and ensuring an eco-friendly start.

Climate and Soil Requirements

  • Climate: Rosemary thrives in warm, sunny climates and is best grown in USDA hardiness zones 7-10. It prefers temperatures between 50-80°F but can tolerate light frost and brief periods of cold weather.
  • Soil: Prefers well-draining, sandy or loamy soil with a slightly acidic to neutral pH (6.0-7.5). Amend the soil with compost or sand to improve drainage if necessary.

Planting

  1. Location: Choose a sunny location that receives at least 6-8 hours of direct sunlight daily. Rosemary does well in garden beds, borders, and containers.
  2. Soil Preparation: Ensure the soil is well-draining and amend with compost or sand if needed to improve drainage and fertility.
  3. Planting Time: Plant Rosemary in the spring after the last frost date or in the fall in milder climates. If starting from seed, sow indoors 8-10 weeks before the last frost and transplant after the danger of frost has passed.
  4. Spacing: Space plants 2-3 feet apart to allow for adequate air circulation and growth.

Watering

  • Establishment Phase: Water regularly to keep the soil consistently moist but not waterlogged during the first year.
  • Mature Plants: Once established, Rosemary is drought-tolerant. Water deeply but infrequently, allowing the top inch of soil to dry out between waterings.
  • Container Plants: Ensure containers have good drainage and water when the top inch of soil feels dry.

Sunlight

  • Full Sun: Rosemary requires full sun for optimal growth and flavor development. Ensure plants receive at least 6-8 hours of direct sunlight daily.

Fertilizing

  • Minimal Fertilization: Rosemary prefers lean soil and does not require heavy fertilization. Apply a balanced, all-purpose fertilizer in the spring if the soil is poor.
  • Organic Options: Consider using compost or a mild organic fertilizer to provide nutrients without over-fertilizing.

Pruning and Maintenance

  • Routine Pruning: Prune regularly to maintain shape, encourage bushy growth, and remove dead or damaged branches. Pruning also helps improve air circulation and reduces the risk of disease.
  • Harvesting: Harvest Rosemary leaves as needed throughout the growing season. For best flavor, pick leaves in the morning after the dew has dried.

Pest and Disease Management

  • Common Pests: Rosemary is generally pest-resistant but may occasionally attract aphids, spider mites, and whiteflies. Use insecticidal soap or neem oil to control infestations.
  • Diseases: Watch for signs of root rot and powdery mildew, which can occur in poorly drained soil or high humidity. Ensure proper spacing, good air circulation, and avoid overwatering to reduce disease risk.

Winter Care

  • Outdoor Plants: In regions with cold winters, protect outdoor Rosemary plants with mulch or frost cloth. Consider growing Rosemary in containers that can be moved indoors during severe weather.
  • Indoor Plants: Place potted Rosemary near a bright window with plenty of light. Maintain a consistent temperature and avoid drafts.