Gardeners should be aware that fertilising this plant in June can actually harm its flowers – here’s what to do instead

Lavender, renowned for its striking purple blooms, requires careful fertilisation in June as it can potentially damage the flowers. This might seem odd given that fertiliser typically promotes flowering, but lavender is a Mediterranean plant that flourishes in poor soil conditions and warm climates.

Fertilising lavender during this period can result in the leaves growing at an unnatural pace, hindering flower production. The outcome is a droopy lavender plant with lush foliage but no flowers, significantly weakened from expending all its energy.

However, Mike and Sandra, owners of Willamette Valley Lavender, have shared their simple tips for achieving healthy lavender blooms. They advised: “The soil should be sandy or gravelly to allow excess water to drain away from the roots, preventing rot. If you have heavy clay soil, mix in gravel or sand to improve drainage.”

Naturally, lavender thrives in dry, gritty soil, making it quite hardy, but it is susceptible to death if the ground becomes waterlogged, reports the Express. Water can quickly pass through sand and gravel, preventing it from lingering in the soil and causing root mould and rot.

Incorporating sand and gravel into the soil prevents water accumulation after rainfall and also allows more air into the soil, preventing the plant from suffocating.

It is important to be aware that while lavender does not favour wet soil, regular watering during summer is essential for it to blossom.

Farmers recommend the following approach: “Water thoroughly once a week or when the soil is completely dry two to three inches below the surface. Always water at the base of the plant to keep the foliage dry and prevent disease.”

Due to lavender’s preference for dry conditions, it’s advised to check the moisture level of the surrounding soil before deciding whether to water the plant, rather than sticking to a rigid schedule.

Pruning should be done in late summer, after the flowering period has concluded, to attract more pollinators. This encourages the growth of larger and healthier flowers.

The farmers further advised: “Allow lavender flowers to bloom throughout the summer months. The blooms will attract pollinators like bees and butterflies to your garden.”

Correct soil care, adequate watering, and timely pruning are key factors that contribute to a lavish display of lavender throughout the summer season.

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