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Lavender Fertilizer

4.2 · 63 reviews

Lavender is the plant most often killed with kindness. Our liquid Lavender Fertilizer is made for a plant that resents being fed heavily, and it mixes into water so you can keep each feed light and measured. Follow the mixing directions on the bottle — with lavender, less and later beats more and sooner.

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When your lavender may benefit from feeding

  • When lavender grows in a pot, where the limited soil is watered through and drains freely
  • When plants are building their flower spikes in late spring and early summer
  • When a plant has held the same container mix for more than a season or two
  • When lavender sits in poor, thin ground that drains sharply but is genuinely short on nutrients

More is worse with lavender. Excess nitrogen gives soft, leafy growth, fewer flowers and plants that come through winter badly, and no amount of feeding corrects wet feet or heavy soil — drainage and full sun come first.

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for lavender varieties

  • English Lavender
  • Hidcote
  • Munstead
  • French Lavender
  • Spanish Lavender
  • Phenomenal Lavender
  • Grosso
  • Provence
  • Lavender

How to care for lavender

Light

Full sun, eight hours or more, with open air around your lavender. Lavender in part shade grows leggy, flowers thinly and holds damp around the crown.

Water

Water deeply but rarely once established, roughly every two weeks in dry weather. Let the soil dry well between waterings; soggy roots end lavender faster than drought.

Soil

Lean, gritty, sharply drained soil, pH 6.5 to 7.5. Work coarse sand or gravel into heavy ground, and mulch with stone or grit rather than bark.

Feeding

Lavender wants a light hand. Feed Lavender Fertilizer about once a month in spring and early summer, then stop by late summer, since rich soil trades flowers for floppy growth.

Pruning

Shear off the top third after flowering, cutting back into green growth and never into bare wood. An annual trim keeps plants tight and productive for years.

Temperature

English lavenders take hard winters well below zero, while French and Spanish types want winters above roughly 15F, so grow those in pots where winters are cold.

Frequently asked questions

Does lavender need fertilizer?

Very little, and Lavender Fertilizer is formulated with that in mind. Lavender evolved on lean, rocky soil, and heavy feeding, especially nitrogen, makes it floppy, leafy and less fragrant. What it does need is a light feed that covers the essentials without pushing soft growth. For most plants, one light feed in early spring as growth starts and one after the first bloom is plenty; container plants, which lose nutrients with watering, may take a little more.

How often should I feed lavenders?

Lightly and not often. Lavender Fertilizer is a liquid, so it mixes into your regular watering at the recommended dilution, but lavender doesn’t want the weekly routine a vegetable bed does. Every 1–2 weeks in spring and summer is the upper end, and only for actively growing plants in containers or lean soil; in-ground plants in decent soil do well on a feed in early spring and another after the first bloom. In fall and winter, once every 4 weeks at most, and only for plants still growing indoors or in a mild climate.

Why is my lavender turning yellow?

Wet feet, not hunger, in most cases. Lavender needs sharp drainage and drying between waterings, and yellowing lower foliage on a plant in heavy or constantly damp soil is a root problem that fertilizer can’t fix. Fix the drainage first: move your lavender to a raised spot or a gritty mix, and let the soil dry between waterings. Once the roots are healthy again, a light feed of Lavender Fertilizer helps your plant recover and push fresh gray-green growth.

Is it safe to use on food crops?

Yes. Lavender Fertilizer is made for a plant that’s often harvested for the kitchen, the tea pot and the linen drawer. It supplies the same mineral nutrients lavender draws from soil, taken up through the roots and used to build stems and flowers, rather than anything that coats the harvest. Water it in at the base of your lavender, then rinse the flowers and leaves you pick as you normally would.

Will this burn my plants?

Lavender Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled at the base of a plant. Mixed at the recommended dilution and watered in, the nutrients arrive in solution at a strength the roots take up as they water. Lavender wants a light hand anyway, so keep to the mix, feed no more often than your lavender needs, and flush with plain water if you ever mix too strong.

When will I see results?

Greener, sturdier new growth usually shows within two to four weeks of a feed, and with lavender the goal is modest: fresh gray-green shoots and a plant that holds its shape, not a burst of soft foliage. The flowering benefit from Lavender Fertilizer builds over the season, with the clearest difference at the next bloom, and on a plant that has been struggling, over the following year as the drainage and light are put right.

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Lavender Fertilizer 8oz $11.99