Fertilising guide

How to fertilise Daylily 'Double River Wye' (Hemerocallis 'Double River Wye')— schedule & NPK

Also called Double River Wye daylily, double cream daylily, double white daylily.

More about daylily 'double river wye'

About Daylily 'Double River Wye'

Hemerocallis 'Double River Wye' · also called Double River Wye daylily, double cream daylily · flowering

Hemerocallis 'Double River Wye' is a distinctive double-flowered daylily bearing large, cream-white blooms with extra petaloid segments that create a full, rose-like appearance in mid-summer. It is a classic British-raised cultivar with a gentle fragrance. Toxic to cats — the entire plant including pollen can cause acute, life-threatening kidney failure.

Growth habit: Clump-forming deciduous perennial with arching mid-green foliage

Watch for — Incomplete double flower expression: In cool summers or under low-fertility conditions, blooms may revert toward single form. Improve soil fertility and ensure full sun exposure.

What fertiliser daylily 'double river wye' actually wants — and why

Daylily 'Double River Wye' 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 daylily 'double river wye': 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 daylily 'double river wye', 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 daylily 'double river wye':

Apply a balanced fertiliser in spring and a high-phosphorus bloom booster in early summer. Double-flowered cultivars have higher nutritional demands than singles; a mid-season liquid feed supports petal formation. Avoid excess nitrogen. 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 daylily 'double river wye' 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 daylily 'double river wye'

Follow the flowering-feed label rate for daylily 'double river wye', 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 daylily 'double river wye' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the daylily 'double river wye' watering schedule.

Signs you are over-feeding daylily 'double river wye'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for daylily 'double river wye':

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 daylily 'double river wye'

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 daylily 'double river wye' care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Container-grown daylily 'double river wye' 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 daylily 'double river wye'

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 daylily 'double river wye' — frequently asked questions

What fertiliser does daylily 'double river wye' 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. Daylily 'Double River Wye' 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 daylily 'double river wye'?

Apply a balanced fertiliser in spring and a high-phosphorus bloom booster in early summer. Double-flowered cultivars have higher nutritional demands than singles; a mid-season liquid feed supports petal formation. Avoid excess nitrogen. Apply a balanced fertiliser in spring and a high-phosphorus bloom booster in early summer. Double-flowered cultivars have higher nutritional demands than singles; a mid-season liquid feed supports petal formation. Avoid excess nitrogen. 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 daylily 'double river wye'?

What does over-feeding daylily 'double river wye' 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 daylily 'double river wye' 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 daylily 'double river wye'?