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When Does Lavender Flower? Timing by Type and Age

English lavender flowers once in early summer; French and Spanish types repeat from spring to autumn. Why a young plant or a hard prune delays everything.

By Salma 3 min read Save to Pinterest — opens Pinterest in a new tab
Rows of lavender in full flower in early summer
Photo: 掬茶, CC BY-SA 4.0, via Wikimedia Commons
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“When does lavender flower” has three different answers, and which one applies to you depends entirely on which lavender you bought — something plant labels are often vague about.

By type

Flowering season by lavender type
TypeFlowersPatternHardy to
English (L. angustifolia) — Hidcote, MunsteadEarly–mid summerOne flush, sometimes a small secondZone 5
Lavandin (L. × intermedia) — Grosso, ProvenceMid–late summerOne flush, long stems, heaviest scentZone 5–6
Spanish (L. stoechas) — the “rabbit ear” oneLate spring onwardRepeats in flushes to autumnZone 7–8
French (L. dentata)Late spring onwardNearly continuous in mild climatesZone 8

The quickest way to tell Spanish lavender: the flower head is a fat purple cone topped with two or more upright petal “ears”. If your lavender has those, it is a repeat bloomer and it is also the least cold-hardy of the group.

Why yours might not be flowering

In rough order of likelihood:

Too much shade. Lavender wants full sun — six hours minimum, eight better. Shade gives you a green plant and few flowers.

Too rich, too wet. Lavender evolved on thin, stony Mediterranean hillsides. Fertile soil and generous watering produce leaf at the expense of flower, and wet roots in winter kill it outright. Sharp drainage matters more than feeding.

Too much nitrogen. Same mechanism. Do not feed it; certainly not with a lawn fertilizer nearby.

It is a first-year plant. Year one is roots. This is normal and not fixable, only waited out.

It was pruned into old wood. Lavender does not reliably regrow from bare woody stems. A hard cut into the brown, leafless base can cost you a season or the whole plant.

Wrong type for the climate. Spanish lavender in zone 5 dies back; English lavender in humid heat sulks and rots. Match the type to where you actually live.

Deadheading buys you more

On repeat-flowering Spanish and French types, cutting spent spikes promptly is what triggers the next flush. On English lavender, shearing the spent flower stems just into the green growth right after flowering gives you a reasonable chance of a smaller second flush in late summer — and keeps the plant compact either way.

Cutting it for drying

The timing that matters most: when about the bottom third of the buds on a spike have opened, and the rest are still closed.

That is peak essential oil. Fully open flowers have already lost some scent, and dried heads shatter more easily when harvested late.

Cut in the morning after dew has dried, bundle loosely, and hang somewhere dark and airy — sunlight bleaches both the colour and the scent out.

The plant’s own lifespan

Year one, little. Year two, a proper flush. Years three to five, the best it will ever be.

After about five or six years lavender goes woody and open in the middle, and no amount of pruning brings it back — cutting into that old wood is what kills it. That is the point to take cuttings from the plant you have and start its replacement, which takes ten minutes in summer.

Common questions

When does lavender flower?

It depends on the type. English lavender flowers once, for three to four weeks in early to mid summer — roughly June into July in most of the US. Lavandin, the larger hybrid, flowers a few weeks later, in July and August. Spanish and French lavenders start earliest, often in late spring, and repeat in flushes through to autumn if deadheaded. A newly planted lavender frequently flowers little or not at all in its first year.

Why is my lavender not flowering?

Most often too much shade, too much water, or too rich a soil — lavender flowers best under mild stress and in full sun. Excess nitrogen in particular gives a lush green plant with few flowers. Other causes are a plant still in its first year, a hard prune into old wood that removed the flowering growth, and simply the wrong type for your climate, since Spanish lavender struggles with cold and English lavender struggles with humidity.

Does lavender flower twice a year?

Some types do. Spanish and French lavenders flower in repeated flushes from spring into autumn. English lavender will sometimes give a smaller second flush in late summer if you cut the spent stems back promptly after the first flowering, though it is never as generous as the first. Lavandin generally flowers once.

How long do lavender flowers last?

An individual flush lasts about three to four weeks on the plant. Repeat-flowering types stretch the total season to several months through successive flushes. Cutting the stems for drying while the lowest buds have just opened gives you both the strongest scent and, on English lavender, a decent chance of that second flush.

When should you cut lavender for drying?

When roughly the bottom third of the buds on a spike have opened and the rest are still closed. That is the peak of essential oil content — fully open flowers have already lost some of it, and the dried heads shatter more readily. Cut in the morning after dew has dried, bundle loosely, and hang somewhere dark and airy.

How long before a new lavender plant flowers?

Expect little in the first year — a young plant is building roots, and any flowers it does produce will be sparse. The second year gives a proper flush, and years three to five are the best. After about five or six years plants go woody and sparse in the middle, at which point taking cuttings is more productive than trying to renovate them.

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