While all lavender varieties are inherently drought-tolerant once established, some are particularly well-suited for hot, arid climates due to their superior heat tolerance and ability to thrive with minimal water.
The main types of lavender that generally perform well in arid climates, especially those with hot, dry summers and relatively dry winters, include:
1. Lavandins (Hybrid Lavenders - Lavandula x intermedia)
These are crosses between English Lavender (L. angustifolia) and Spike Lavender (L. latifolia). They generally produce larger plants, longer flower stalks, and bloom later than English lavenders. Many Lavandins are known for their excellent heat and drought tolerance.
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'Grosso': This is a very popular and widely grown commercial variety due to its high essential oil content and robust nature. 'Grosso' is known for its vigor, heat tolerance, and strong fragrance, making it an excellent choice for arid climates.
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'Provence': Another classic Lavandin, 'Provence' is highly adaptable and performs well in hot, dry conditions. It's often used for culinary purposes and dried arrangements. It's known to thrive in direct, hot sun on exposed slopes.
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'Phenomenal': This relatively newer hybrid has gained significant popularity for its exceptional resilience. It's lauded for being very heat-tolerant, drought-tolerant, and even showing good cold hardiness. It's touted as one of the toughest and most adaptable lavenders available.
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'Sensational!': An offspring of 'Phenomenal', it shares many of its parent's robust qualities, including strong heat and drought tolerance.
2. Spanish Lavenders (Lavandula stoechas)
These lavenders are easily recognized by their unique "bunny ear" bracts on top of their flower spikes. They are particularly well-suited for hot, dry conditions and can even tolerate some humidity better than English lavenders, although they still require excellent drainage.
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General Species: Many Spanish lavenders are inherently very drought-resistant and thrive in the dry heat of arid regions.
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'Otto Quast': A popular Spanish lavender known for its abundant blooms and tolerance to heat and drought.
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'Kew Red': Though not truly red, this variety has beautiful reddish-pink bracts and is noted for its drought tolerance.
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'Primavera': Bred specifically to withstand hot conditions and offers a long blooming period.
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'Anouk' / 'Silver Anouk': These are often cited for their good heat tolerance and attractive silver foliage.
3. French Lavenders (Lavandula dentata)
These are known for their finely toothed, often grey-green foliage and a longer blooming season, sometimes blooming almost year-round in very mild climates. They can tolerate heat and are relatively drought-tolerant.
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'Goodwin Creek Grey': This is a widely recommended French lavender for arid and hot climates. It has attractive silvery-grey, serrated foliage and is known for its heat tolerance and vigorous growth.
Important Considerations for Arid Climates:
Even with the best varieties, success in arid climates still hinges on these factors:
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Impeccable Drainage: This cannot be overstressed. Even in dry climates, if the soil is heavy clay and retains water after the infrequent rains, your lavender will suffer. Amend soil heavily with grit, sand, or pumice, or plant in raised beds/mounds.
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Full Sun: Lavender absolutely needs at least 6-8 hours of direct sunlight, especially in arid regions where the intensity of the sun helps to keep the foliage and root zone dry.
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Watering During Establishment: While drought-tolerant, all lavender varieties need regular, deep watering during their first year or two to develop a strong, deep root system. Once established, reduce watering drastically.
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Air Circulation: Good air circulation helps to dry foliage quickly after any rare rain events or morning dew, reducing the risk of fungal issues.
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Mulching (Inorganic): A layer of light-colored gravel or crushed stone around the base of the plant can help regulate soil temperature, reflect heat, and keep the crown dry.
By selecting appropriate varieties and adhering to excellent drainage and full sun requirements, lavender can be a fantastic, water-wise choice for arid landscapes.
Lavender Farm in Door County Wisconsin. You can buy lavender products online at islandlavender.com
