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Fertilising guide

How to fertilise Lonicera periclymenum 'Serotina' (Lonicera periclymenum 'Serotina')— schedule & NPK

Also called late Dutch honeysuckle, late flowering woodbine.

More about lonicera periclymenum 'serotina'

About Lonicera periclymenum 'Serotina'

Lonicera periclymenum 'Serotina' · also called late Dutch honeysuckle, late flowering woodbine · flowering

Lonicera periclymenum 'Serotina', the late Dutch honeysuckle, is a popular garden cultivar of common honeysuckle prized for richly fragrant flowers, deep red-purple in bud opening to creamy interiors, carried later and longer than the species. A hardy, easy deciduous twiner, it scents summer evenings, draws pollinators and clothes trellis, arches and walls with bloom.

Growth habit: Deciduous twining climber of moderate vigour, freely flowering over a long late-summer season; tie in young growth and guide onto support.

What fertiliser lonicera periclymenum 'serotina' actually wants — and why

Lonicera periclymenum 'Serotina' 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 lonicera periclymenum 'serotina': 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 lonicera periclymenum 'serotina', 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 lonicera periclymenum 'serotina':

Feed lightly in spring with a balanced fertiliser and mulch annually with well-rotted organic matter to keep roots cool and fed. Avoid high-nitrogen feeds that produce soft, mildew-prone growth. 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 lonicera periclymenum 'serotina' 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 lonicera periclymenum 'serotina'

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

Signs you are over-feeding lonicera periclymenum 'serotina'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for lonicera periclymenum 'serotina':

Signs you are under-feeding lonicera periclymenum 'serotina'

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

Flushing and leaching the salts

Flush the pot of lonicera periclymenum 'serotina' 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 lonicera periclymenum 'serotina'

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 lonicera periclymenum 'serotina' — frequently asked questions

What fertiliser does lonicera periclymenum 'serotina' 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. Lonicera periclymenum 'Serotina' 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 lonicera periclymenum 'serotina'?

Feed lightly in spring with a balanced fertiliser and mulch annually with well-rotted organic matter to keep roots cool and fed. Avoid high-nitrogen feeds that produce soft, mildew-prone growth. Feed lightly in spring with a balanced fertiliser and mulch annually with well-rotted organic matter to keep roots cool and fed. Avoid high-nitrogen feeds that produce soft, mildew-prone growth. 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 lonicera periclymenum 'serotina'?

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

What does over-feeding lonicera periclymenum 'serotina' 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 lonicera periclymenum 'serotina' 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 lonicera periclymenum 'serotina'?

Flush the pot of lonicera periclymenum 'serotina' 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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