Growli
Let's go

Fertilising guide

How to fertilise Wood's Cycad (Encephalartos woodii)— schedule & NPK

Also called Wood's Encephalartos.

More about wood's cycad

About Wood's Cycad

Encephalartos woodii · also called Wood's Encephalartos · houseplant

Wood's Cycad is one of the rarest plants on Earth, extinct in the wild and known only from male clones. Indoors it is a slow, architectural specimen with a stout trunk and glossy, arching pinnate fronds. It wants strong light, sharp drainage and patience, rewarding good care with a single magnificent flush of new leaves each year.

Growth habit: Extremely slow-growing, single-trunked cycad forming a stout columnar caudex topped by a symmetrical crown of stiff, arching fronds. New leaves emerge in a single annual flush.

What fertiliser wood's cycad actually wants — and why

Wood's Cycad 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 wood's cycad: 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 wood's cycad, 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 wood's cycad:

Feed monthly through spring and summer with a balanced liquid feed at half strength, or use a slow-release palm/cycad fertiliser once in spring. Cycads benefit from supplemental magnesium; do not feed in winter. Treat that as monthly 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 wood's cycad 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 wood's cycad

Half strength is the safe default for wood's cycad — 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 wood's cycad first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the wood's cycad watering schedule.

Signs you are over-feeding wood's cycad

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for wood's cycad:

Signs you are under-feeding wood's cycad

If the symptoms point at watering, light or roots rather than nutrition, the full wood's cycad care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of wood's cycad 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 wood's cycad

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 wood's cycad — frequently asked questions

What fertiliser does wood's cycad 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. Wood's Cycad 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 wood's cycad?

Feed monthly through spring and summer with a balanced liquid feed at half strength, or use a slow-release palm/cycad fertiliser once in spring. Cycads benefit from supplemental magnesium; do not feed in winter. Feed monthly through spring and summer with a balanced liquid feed at half strength, or use a slow-release palm/cycad fertiliser once in spring. Cycads benefit from supplemental magnesium; do not feed in winter. Treat that as monthly 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 wood's cycad?

Half strength is the safe default for wood's cycad — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding wood's cycad 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 wood's cycad 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 wood's cycad?

Flush the pot of wood's cycad 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