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Rosemary Plants, Madalene Hill
Rosemary Plants, Madalene Hill
(Salvia rosmarinus). Your order contains 2 plants. This cold-hardy rosemary was named for herb enthusiast Madalene Hill (1913-2009), a Texas gardener known to many as the “Grand Dame of Herbs.” Rosemary is an essential culinary and medicinal herb native to the Mediterranean, and the soft blue flowers mesmerize pollinators over a long season of blooming. It is perhaps the cold hardiest of all rosemary varieties and will overwinter in USDA zone 6 and above.
- Perennial in USDA zones 6-10
- 85-100 days to harvest
- 6 to 8 hours of full to partial sun
- Plant so that crown is just above soil level
- Plant spacing: 18 to 24 inches
- Ideal temperature: 60°F to 80°F
- Frost hardy? Yes
Growing Tips
Madalene Hill rosemary thrives in well-draining, sandy soil and requires minimal water once established. It is a cold-hardy variety, making it suitable for USDA zones 6-10. Avoid overwatering, as rosemary prefers slightly dry conditions. Prune regularly to maintain shape and encourage bushy growth. Provide mulch for additional root insulation in colder regions.
When to Grow
Plant Madalene Hill rosemary in spring after the last frost or in early fall if winters are mild. This variety can survive temperatures as low as 0°F, making it a resilient choice for cooler climates. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'
How to Sow and Plant
Select a site with full sun and well-draining soil. Plant rosemary so that crown is just above soil level, spacing them 18-24 inches apart to allow for air circulation. Water thoroughly after planting but let the soil dry slightly between waterings. Raised beds or containers work well to prevent root rot in poorly draining soils.
How to Grow
Once established, Madalene Hill rosemary is drought-tolerant and requires minimal maintenance. Water deeply but infrequently, allowing the soil to dry out between watering. Prune lightly after flowering to encourage fresh growth. In colder zones, apply mulch for winter protection or bring potted plants indoors during extreme cold.
How to Save
- Take 3–5-inch cuttings from new growth in spring or early summer.
- Remove lower leaves, leaving at least two sets of leaves at the top.
- Dip cut ends in rooting hormone (optional) for faster rooting.
- Place cuttings in well-draining, moist soil or a peat and perlite-sand mix.
- Keep in a warm, bright location and maintain moisture until roots form (2-4 weeks).
- Transplant when roots are 1-2 inches long
FAQ
Is Madalene Hill rosemary edible?
Yes, Madalene Hill rosemary is edible and has a robust, piney flavor. It is commonly used to season meats, vegetables, and bread. Harvest fresh sprigs as needed for culinary use.
How do I protect Madalene Hill rosemary in winter?
In zones 6-7, mulch heavily around the base in fall to insulate roots. For potted rosemary, move containers indoors to a sunny window or unheated greenhouse to protect against prolonged freezing temperatures.
How often should I water Madalene Hill rosemary?
Water newly planted rosemary regularly until established. Once mature, water deeply every 2-3 weeks, allowing the soil to dry between watering. Overwatering can cause root rot, so ensure proper drainage.
What makes Madeline Hill rosemary different from other varieties?
Madeline Hill rosemary is uniquely frost-tolerant and can survive colder winters (down to Zone 6), making it ideal for gardeners in cooler climates seeking a reliable perennial herb.
