Fertilising guide
How to fertilise Lavender Chirita (Chirita lavandulacea)— schedule & NPK
Also called Lavender Chirita, Lavender Microchirita.
More about lavender chirita
About Lavender Chirita
Chirita lavandulacea · also called Lavender Chirita, Lavender Microchirita · houseplant
Lavender Chirita is a charming annual gesneriad from the Malay Peninsula, growing to 50 cm with soft hairy elliptic leaves and a generous display of pale lavender, white-throated tubular flowers in summer and autumn. Unlike most gesneriads it dies after setting seed, but self-sows freely. It holds an RHS Award of Garden Merit and suits a warm, bright windowsill.
Growth habit: Erect, branching annual herb; upright-growing to 50 cm with opposite hairy elliptic leaves
What fertiliser lavender chirita actually wants — and why
Lavender Chirita is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.
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 lavender chirita: 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 lavender chirita, 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 lavender chirita:
Feed every 2–3 weeks with a balanced liquid fertilizer diluted to half strength from seedling establishment until full bloom. Switch to a high-potassium feed during flowering to prolong and intensify blooms. As an annual, it does not require a winter feeding regime. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when lavender chirita 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 lavender chirita
Half strength is the safe default for lavender chirita — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water lavender chirita first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the lavender chirita watering schedule.
Signs you are over-feeding lavender chirita
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for lavender chirita:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding lavender chirita
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full lavender chirita care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of lavender chirita with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for lavender chirita
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
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 lavender chirita — frequently asked questions
What fertiliser does lavender chirita need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Lavender Chirita is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed lavender chirita?
Feed every 2–3 weeks with a balanced liquid fertilizer diluted to half strength from seedling establishment until full bloom. Switch to a high-potassium feed during flowering to prolong and intensify blooms. As an annual, it does not require a winter feeding regime. Feed every 2–3 weeks with a balanced liquid fertilizer diluted to half strength from seedling establishment until full bloom. Switch to a high-potassium feed during flowering to prolong and intensify blooms. As an annual, it does not require a winter feeding regime. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for lavender chirita?
Half strength is the safe default for lavender chirita — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding lavender chirita look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding lavender chirita year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of lavender chirita?
Flush the pot of lavender chirita with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Lavender Chirita care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water lavender chirita — 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 hoya cinnamomifolia
- How to fertilise hoya rebecca
- How to fertilise hoya chouke
- All 8452 fertilising guides in the Growli library