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Fertilising guide

How to fertilise Crataegus laevigata 'Paul's Scarlet' (Crataegus laevigata 'Paul's Scarlet')— schedule & NPK

Also called Paul's Scarlet Hawthorn, Double Red Hawthorn.

More about crataegus laevigata 'paul's scarlet'

About Crataegus laevigata 'Paul's Scarlet'

Crataegus laevigata 'Paul's Scarlet' · also called Paul's Scarlet Hawthorn, Double Red Hawthorn · flowering

'Paul's Scarlet' is a small, exceptionally hardy hawthorn smothered in double, deep rose-pink to scarlet flowers in late spring. Tough, thorny and wind-firm, it tolerates pollution, exposure and poor soils, making a reliable specimen or street tree. The double blooms set little fruit, so it is a flowering rather than berrying form.

Growth habit: Small, rounded deciduous tree with a dense, twiggy, thorny crown; often grown as a single-stemmed standard for streets and gardens.

What fertiliser crataegus laevigata 'paul's scarlet' actually wants — and why

Crataegus laevigata 'Paul's Scarlet' 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 crataegus laevigata 'paul's scarlet': 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 crataegus laevigata 'paul's scarlet', 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 crataegus laevigata 'paul's scarlet':

Very undemanding. Usually needs no feeding; on poor soils a spring mulch of compost or a light balanced fertiliser aids establishment. Excess nitrogen encourages soft growth more prone to fireblight. 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 crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'

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

Signs you are over-feeding crataegus laevigata 'paul's scarlet'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for crataegus laevigata 'paul's scarlet':

Signs you are under-feeding crataegus laevigata 'paul's scarlet'

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

Flushing and leaching the salts

Flush the pot of crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'

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 crataegus laevigata 'paul's scarlet' — frequently asked questions

What fertiliser does crataegus laevigata 'paul's scarlet' 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. Crataegus laevigata 'Paul's Scarlet' 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 crataegus laevigata 'paul's scarlet'?

Very undemanding. Usually needs no feeding; on poor soils a spring mulch of compost or a light balanced fertiliser aids establishment. Excess nitrogen encourages soft growth more prone to fireblight. Very undemanding. Usually needs no feeding; on poor soils a spring mulch of compost or a light balanced fertiliser aids establishment. Excess nitrogen encourages soft growth more prone to fireblight. 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 crataegus laevigata 'paul's scarlet'?

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

What does over-feeding crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet' 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 crataegus laevigata 'paul's scarlet'?

Flush the pot of crataegus laevigata 'paul's scarlet' 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.

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