Repotting guide

When & how to repot Chaytor's Lavender (Lavandula x chaytorae)

Also called Chaytor's lavender, Silver lavender, Woolly hybrid lavender.

More about chaytor's lavender

About Chaytor's Lavender

Lavandula x chaytorae · also called Chaytor's lavender, Silver lavender · herb

Chaytor's lavender is a garden hybrid between Lavandula angustifolia (English lavender) and L. lanata (woolly lavender), first raised in England in the 1980s and named in honour of Kew botanist Dorothy Chaytor, who authored a landmark 1937 lavender monograph. It inherits the cold hardiness of L. angustifolia and the striking silvery-white, densely woolly foliage of L. lanata, producing long-stemmed, fragrant violet-blue flower spikes in summer; it is one of the hardier of the non-angustifolia hybrids and performs well across most of the UK in free-draining soil. The most important care requirement is excellent drainage, particularly in winter, as the woolly L. lanata parentage makes stems susceptible to rotting in prolonged wet conditions. According to the ASPCA, lavender (Lavandula) is toxic to cats, dogs, and horses.

Mature size: 60–90 cm tall and 60–90 cm wide for most cultivars; vigorous forms such as 'Sawyers' can reach 1–1.5 m in height.

Watch for — Winter stem rot: The woolly stems inherited from the L. lanata parent are prone to rotting at the base when wet and cold simultaneously; avoid autumn pruning in exposed locations, dress around the crown with horticultural grit, and ensure no waterlogging occurs near the root zone from October to March.

How to tell chaytor's lavender needs repotting

Repotting on a calendar is less reliable than reading the plant. For chaytor's lavender, watch for these signs:

A dense root mass with little soil visible when you ease chaytor's lavender out of its pot — check once a year rather than assuming.
Roots emerging from the drainage holes (slow on this plant, so this is a strong signal).
The plant has become top-heavy and tips its pot over.
Genuinely stalled growth across a full season despite adequate light — not just the naturally slow pace this plant always has.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot chaytor's lavender

Every 2–4 years — it is in no hurry. Chaytor's Lavender's growth habit — upright to mounded evergreen shrub with exceptionally silvery-white woolly foliage and long, robust flower stems bearing dark violet spikes. — sets the pace. Chaytor's lavender is a garden hybrid between Lavandula angustifolia (English lavender) and L. lanata (woolly lavender), first raised in England in the 1980s and named in honour of Kew botanist Dorothy Chaytor, who authored a landmark 1937 lavender monograph. It inherits the cold hardiness of L. angustifolia and the striking silvery-white, densely woolly foliage of L. lanata, producing long-stemmed, fragrant violet-blue flower spikes in summer; it is one of the hardier of the non-angustifolia hybrids and performs well across most of the UK in free-draining soil. The most important care requirement is excellent drainage, particularly in winter, as the woolly L. lanata parentage makes stems susceptible to rotting in prolonged wet conditions. According to the ASPCA, lavender (Lavandula) is toxic to cats, dogs, and horses.

What size pot to step chaytor's lavender up to

Step up just one pot size, and only when the roots are genuinely packed. Because chaytor's lavender grows so slowly, a big pot of damp soil will simply sit wet for months around a small root system and invite rot. A snug pot suits this plant; resist the urge to "give it room to grow" — it will not use it.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot chaytor's lavender

Early spring, just as new growth restarts, is the ideal window for chaytor's lavender. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting chaytor's lavender

Time it for spring. Repot chaytor's lavender in early spring as growth restarts so it re-roots quickly into the fresh soil.
Choose one size up. Pick a pot about 2–3 cm wider with drainage holes. One step only — a much bigger pot stays soggy and rots roots.
Ease the plant out. Water lightly the day before, then tip chaytor's lavender out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh well-drained to sharply drained; chalk, loam, or sandy soils in the new pot, set the plant so its soil line is unchanged, and backfill, firming lightly.
Water and pause feeding. Water once to settle the soil. Hold off fertiliser for about a month — fresh mix already has nutrients and feeding now burns new roots.

Aftercare

Because the new soil holds more water than the old crammed rootball did, ease right back on watering — let the top of the soil dry before you water chaytor's lavender again, or you will rot the roots in the very pot you just moved it to. Keep it out of harsh direct sun for a fortnight. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for chaytor's lavender

Chaytor's Lavender wants well-drained to sharply drained; chalk, loam, or sandy soils. Thrives in poor to moderately fertile, alkaline to neutral soil (pH 6.5–8.0); on heavier soils raise planting level or incorporate grit liberally. A gravel mulch around the crown prevents winter soil splash and improves drainage. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting chaytor's lavender — frequently asked questions

How often should you repot chaytor's lavender?

Every 2–4 years — it is in no hurry for chaytor's lavender. Repot chaytor's lavender only every 2–4 years — it builds roots slowly and a yearly repot is wasted effort. Move up just one pot size in spring with fresh well-drained to sharply drained; chalk, loam, or sandy soils. The main error is repotting too often and into too large a pot, which leaves cold wet soil around the roots.

What size pot does chaytor's lavender need?

When is the best time of year to repot chaytor's lavender?

Can you put chaytor's lavender straight into a much bigger pot?

No. Even a fast-growing chaytor's lavender should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise chaytor's lavender after repotting?

Not immediately. Wait about 4 weeks after repotting chaytor's lavender. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.