Rosemary is more than just a fragrant herb for your kitchen—it’s a resilient, sun-loving plant that can thrive all summer long with just a few thoughtful touches. Whether you’re a seasoned gardener or just starting out, keeping your rosemary plant healthy in the heat of summer is easier than you might think. Follow these expert tips to enjoy lush, aromatic growth from June through the end of the season.
1. Give Rosemary the Sun It Craves
Rosemary is a Mediterranean native, which means it adores sunshine. To help your plant flourish, choose a sunny location that gets at least 6 to 8 hours of direct sunlight daily. If you’re growing rosemary in a pot, place it on a patio or balcony that receives maximum sun exposure.
Not getting enough sunlight? Consider supplementing with a grow light indoors. Rosemary grown in partial shade tends to become leggy and less aromatic, so light really makes a difference.
2. Choose the Right Soil
Drainage is everything when it comes to rosemary. This herb hates having “wet feet,” and overly moist soil can lead to root rot. Use a well-draining soil mix—ideally one formulated for cactus or Mediterranean plants. If you’re planting rosemary in a garden bed, amend heavy clay soil with sand or perlite to improve drainage.
A pot with good drainage holes is essential if you’re growing rosemary in a container. Consider using a terracotta pot, which helps wick away excess moisture.
3. Water Sparingly—But Consistently
Overwatering is one of the most common mistakes gardeners make with rosemary. During hot summer months, rosemary prefers to dry out between waterings. Stick your finger about an inch into the soil: if it feels dry, it’s time to water. If it still feels moist, wait another day or two.
In high heat or when grown in containers, rosemary may need watering once or twice a week. Early morning is the best time to water, allowing the soil to absorb moisture before the heat of the day.
4. Prune to Promote Growth
Regular pruning keeps your rosemary bushy and prevents it from becoming too woody. Trim back any leggy stems, especially in early summer, to encourage branching and fuller growth. You can also snip off fresh stems anytime for cooking—just avoid taking more than one-third of the plant at once.
Bonus: pruning also enhances airflow, helping to prevent mildew or fungal diseases.
5. Feed It Lightly
Rosemary is not a heavy feeder, but a light application of balanced organic fertilizer once a month during the growing season can boost health and fragrance. Avoid high-nitrogen fertilizers, which can promote leafy growth at the expense of aroma.
Final Thoughts
With its low-maintenance needs and drought-tolerant nature, rosemary is the perfect summer companion for any gardener. By giving it sun, well-drained soil, the right watering routine, and occasional pruning, you’ll keep your rosemary plant thriving through the hottest months and beyond.
