Fertilising guide
How to fertilise Upright Plum Yew (Cephalotaxus harringtonia 'Fastigiata')— schedule & NPK
Also called Fastigiate Japanese Plum Yew, Columnar Plum Yew, Harrington Plum Yew.
More about upright plum yew
About Upright Plum Yew
Cephalotaxus harringtonia 'Fastigiata' · also called Fastigiate Japanese Plum Yew, Columnar Plum Yew · flowering
Upright Plum Yew is a striking, vase-shaped to columnar shrub with spirally arranged, dark-green, yew-like needles pointing upward. Extremely tolerant of shade and dry soil, making it one of the most adaptable formal conifers. Not individually listed by the ASPCA; related genera have toxic alkaloids — treat as potentially toxic.
Growth habit: Upright, vase-shaped to columnar evergreen shrub with ascending branches
Watch for — Foliage browning from de-icer salt: Salt spray from roads or paths can cause foliage browning. Avoid planting directly adjacent to salted surfaces.
What fertiliser upright plum yew actually wants — and why
Upright Plum Yew 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 upright plum yew: 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 upright plum yew, 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 upright plum yew:
Apply a slow-release balanced fertiliser in early spring. This genus is undemanding; established plants in average soil need little supplemental feeding. 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 upright plum yew 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 upright plum yew
Half strength is the safe default for upright plum yew — 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 upright plum yew first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the upright plum yew watering schedule.
Signs you are over-feeding upright plum yew
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for upright plum yew:
- 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 upright plum yew
- 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 upright plum yew care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of upright plum yew 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 upright plum yew
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 upright plum yew — frequently asked questions
What fertiliser does upright plum yew 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. Upright Plum Yew 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 upright plum yew?
Apply a slow-release balanced fertiliser in early spring. This genus is undemanding; established plants in average soil need little supplemental feeding. Apply a slow-release balanced fertiliser in early spring. This genus is undemanding; established plants in average soil need little supplemental feeding. 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 upright plum yew?
Half strength is the safe default for upright plum yew — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding upright plum yew 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 upright plum yew 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 upright plum yew?
Flush the pot of upright plum yew 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
- Upright Plum Yew care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water upright plum yew — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
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- All 11687 fertilising guides in the Growli library