Fertilising guide

How to fertilise Weigela 'Wine & Roses' (Weigela florida 'Alexandra')— schedule & NPK

Also called Wine and Roses Weigela.

More about weigela 'wine & roses'

About Weigela 'Wine & Roses'

Weigela florida 'Alexandra' · also called Wine and Roses Weigela · flowering

Weigela 'Wine & Roses' is a deciduous shrub grown for its dramatic glossy burgundy-purple foliage paired with rosy-pink, trumpet-shaped late-spring flowers that draw hummingbirds and butterflies. The dark leaves hold colour all season, deepening in full sun. Compact and reliable, it thrives in full sun in moist, well-drained soil and works in borders, mass plantings, and containers.

Growth habit: Compact, rounded, mounded deciduous shrub with arching stems and dense, dark foliage.

Watch for — Aphids and spider mites: Sap-feeders distort new shoots and stipple leaves in hot, dry spells. Hose off, encourage predators, and treat only persistent infestations.

What fertiliser weigela 'wine & roses' actually wants — and why

Weigela 'Wine & Roses' is a heavy-blooming flower with a big appetite — a regular high-potash feed through the season is what drives a long, dense display.

A high-potassium ("high-potash") flowering feed — tomato-style or a dedicated bloom/rose feed. Potassium powers flowering; a high-nitrogen feed gives you a leafy plant with disappointing bloom.

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 weigela 'wine & roses': 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 weigela 'wine & roses', 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 weigela 'wine & roses':

Feed lightly with a balanced slow-release shrub fertiliser in early spring, or top-dress with compost. Excess nitrogen drives leafy growth and can dull flowering, so keep feeding moderate. For a hungry bloomer that means feeding regularly — sparingly through the growing season — right through flowering across the main season (spring through early autumn), tapering as blooming ends.

The dormant-season rule matters more than the exact interval: skip feeding entirely when weigela 'wine & roses' 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 weigela 'wine & roses'

Follow the flowering-feed label rate for weigela 'wine & roses', or half strength if feeding very frequently. These plants genuinely use the nutrients — under-feeding shows up fast as a thin display.

Feeding always goes onto already-damp soil, never dry roots — water weigela 'wine & roses' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the weigela 'wine & roses' watering schedule.

Signs you are over-feeding weigela 'wine & roses'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for weigela 'wine & roses':

Lots of lush leaves but few flowers (too much nitrogen).
Scorched leaf edges and salt crust from too-strong or too-frequent feeds.
Soft, sappy growth prone to aphids and mildew.

Signs you are under-feeding weigela 'wine & roses'

Sparse, small, short-lived flowers and pale foliage.
A tired plant that stops blooming early in the season.
Weak growth and poor repeat-flowering after the first flush.

If the symptoms point at watering, light or roots rather than nutrition, the full weigela 'wine & roses' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Container-grown weigela 'wine & roses' accumulates feed salts fast with frequent feeding — water until it drains each time and flush pots with plain water every few weeks to prevent scorch.

Organic vs synthetic feeds for weigela 'wine & roses'

Organic options

A liquid comfrey or seaweed feed (naturally potassium-rich) plus compost or well-rotted manure as a mulch. UK: comfrey feed, organic Tomorite, or rose feed; US: Espoma Rose-tone or Neptune's Harvest. Feeds and improves soil.

Synthetic / liquid feeds

A high-potash flowering feed on a regular cadence — UK: Tomorite (Levington), Phostrogen or a specialist rose feed; US: Miracle-Gro Bloom Booster or a rose food. Fast, reliable bloom response.

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 weigela 'wine & roses' — frequently asked questions

What fertiliser does weigela 'wine & roses' need?

A high-potassium ("high-potash") flowering feed — tomato-style or a dedicated bloom/rose feed. Potassium powers flowering; a high-nitrogen feed gives you a leafy plant with disappointing bloom. Weigela 'Wine & Roses' is a heavy-blooming flower with a big appetite — a regular high-potash feed through the season is what drives a long, dense display.

How often should I feed weigela 'wine & roses'?

Feed lightly with a balanced slow-release shrub fertiliser in early spring, or top-dress with compost. Excess nitrogen drives leafy growth and can dull flowering, so keep feeding moderate. Feed lightly with a balanced slow-release shrub fertiliser in early spring, or top-dress with compost. Excess nitrogen drives leafy growth and can dull flowering, so keep feeding moderate. For a hungry bloomer that means feeding regularly — sparingly through the growing season — right through flowering across the main season (spring through early autumn), tapering as blooming ends.

What strength of feed for weigela 'wine & roses'?

What does over-feeding weigela 'wine & roses' look like?

Lots of lush leaves but few flowers (too much nitrogen). Scorched leaf edges and salt crust from too-strong or too-frequent feeds. Soft, sappy growth prone to aphids and mildew. Using a high-nitrogen general feed on weigela 'wine & roses' is the headline mistake — you grow a big leafy plant with few flowers. The second is simply under-feeding a genuinely hungry bloomer and getting a sparse, short display.

Should I flush the soil of weigela 'wine & roses'?