Fertilising guide
How to fertilise Chaytor's Lavender (Lavandula x chaytorae)— schedule & NPK
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.
Growth habit: Upright to mounded evergreen shrub with exceptionally silvery-white woolly foliage and long, robust flower stems bearing dark violet spikes.
Watch for — Rosemary beetle (Chrysolina americana): Metallic green and purple striped adults and their grey larvae feed on foliage from late summer into autumn. Monitor from August; hand-pick in the evening or apply a suitable contact insecticide; infestations are rarely plant-threatening but repeated defoliation weakens plants.
What fertiliser chaytor's lavender actually wants — and why
Chaytor's Lavender is a lean, aromatic herb — the essential-oil flavour you grow it for is strongest in poor soil, so feeding it actively makes it worse.
Little or nothing. If anything, a very weak balanced feed or a thin compost top-dress — never a rich nitrogen feed, which dilutes the aromatic oils and produces soft, bland, floppy growth.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for chaytor's lavender: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed chaytor's lavender, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For chaytor's lavender:
Apply a low-nitrogen balanced fertiliser once in early spring; the hybrid performs best in lean soils and excess fertility diminishes flower production and fragrance. In practice: a spring compost top-dress at most, and otherwise leave chaytor's lavender unfed — lean, sharp-draining soil is exactly what concentrates its flavour.
The dormant-season rule matters more than the exact interval: skip feeding entirely when chaytor's lavender is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for chaytor's lavender
As weak as it gets for chaytor's lavender, or none at all. The flavour-versus-growth trade-off runs the opposite way to leafy crops: restraint is the technique.
Feeding always goes onto already-damp soil, never dry roots — water chaytor's lavender first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the chaytor's lavender watering schedule.
Signs you are over-feeding chaytor's lavender
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for chaytor's lavender:
- Lush, soft, fast growth with noticeably weaker scent and flavour.
- Floppy stems, sparse essential oils, and poor cold/wet hardiness.
- Salt crust in containers and scorched leaf tips from over-feeding.
Signs you are under-feeding chaytor's lavender
- Rare — these herbs thrive on lean soil.
- Only on truly exhausted soil: pale, thin, very slow growth.
- A short-lived, weak plant in a long-spent container.
If the symptoms point at watering, light or roots rather than nutrition, the full chaytor's lavender care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Over-feeding is so unlikely with chaytor's lavender that flushing is rarely needed; if a container has had feed, a single plain-water flush and a switch to a leaner, grittier mix resets it.
Organic vs synthetic feeds for chaytor's lavender
Organic options
A thin spring mulch of garden compost or leaf-mould is the most these want. UK: a little garden compost; US: a light Espoma Garden-tone top-dress at most. Lean and gritty beats fed and rich every time.
Synthetic / liquid feeds
Generally none for chaytor's lavender. At absolute most, a very dilute balanced feed once or twice in a container; in the ground, nothing — synthetic feeds work directly against the flavour.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising chaytor's lavender — frequently asked questions
What fertiliser does chaytor's lavender need?
Little or nothing. If anything, a very weak balanced feed or a thin compost top-dress — never a rich nitrogen feed, which dilutes the aromatic oils and produces soft, bland, floppy growth. Chaytor's Lavender is a lean, aromatic herb — the essential-oil flavour you grow it for is strongest in poor soil, so feeding it actively makes it worse.
How often should I feed chaytor's lavender?
Apply a low-nitrogen balanced fertiliser once in early spring; the hybrid performs best in lean soils and excess fertility diminishes flower production and fragrance. Apply a low-nitrogen balanced fertiliser once in early spring; the hybrid performs best in lean soils and excess fertility diminishes flower production and fragrance. In practice: a spring compost top-dress at most, and otherwise leave chaytor's lavender unfed — lean, sharp-draining soil is exactly what concentrates its flavour.
What strength of feed for chaytor's lavender?
As weak as it gets for chaytor's lavender, or none at all. The flavour-versus-growth trade-off runs the opposite way to leafy crops: restraint is the technique.
What does over-feeding chaytor's lavender look like?
Lush, soft, fast growth with noticeably weaker scent and flavour. Floppy stems, sparse essential oils, and poor cold/wet hardiness. Salt crust in containers and scorched leaf tips from over-feeding. Feeding chaytor's lavender like a leafy vegetable is the defining mistake — rich nitrogen gives you a big, soft, fast plant whose leaves are watery and bland, with weak winter-rot resistance.
Should I flush the soil of chaytor's lavender?
Over-feeding is so unlikely with chaytor's lavender that flushing is rarely needed; if a container has had feed, a single plain-water flush and a switch to a leaner, grittier mix resets it.
Keep reading
- Chaytor's Lavender care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water chaytor's lavender — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise lime basil
- How to fertilise cinnamon basil
- How to fertilise african blue basil
- All 10153 fertilising guides in the Growli library