Plant guide:💜 Lavender
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Nutrients

Excess Nitrogen Causing Lush but Non-Flowering Lavender

Commonly affects: Lavandula angustifolia / L. x intermedia (Lavender)

The plant grows unusually lush, soft, and leafy but produces few or no flowers, sometimes with weaker, floppier stems than typical.

Potential Causes

  1. 1Overly rich soil or fertiliser high in nitrogen, which favours leafy growth at the expense of flowering
  2. 2Applying general-purpose garden fertiliser intended for more demanding plants, rather than lavender's naturally lean requirements
  3. 3Planting in a spot recently amended with rich compost or manure intended for other plants

Solution Steps

  1. 1Stop feeding entirely and allow the soil's excess nutrients to be used up or leach out over a season or two
  2. 2Avoid fertilising lavender at all in most garden soils, since it thrives on relative nutrient scarcity
  3. 3If replanting, choose a lean, unamended spot rather than a recently richly-composted bed
  4. 4Be patient, since flowering typically improves once excess nitrogen is depleted from the soil

Prevention Tip

Unlike most garden plants, lavender actively performs worse with rich soil and regular feeding — resisting the urge to fertilise is often the fix, not the problem.