Fertilising guide

How to fertilise Bonica Rose (Rosa 'Bonica')— schedule & NPK

Also called Bonica, Meidomonac, Bonica 82.

More about bonica rose

About Bonica Rose

Rosa 'Bonica' · also called Bonica, Meidomonac · flowering

Rosa 'Bonica' (Meidomonac), the first shrub rose to win AARS in 1987, produces sprays of soft-pink double blooms continuously from early summer to frost. Exceptionally hardy, disease-resistant and trouble-free, it forms an arching, spreading shrub that also bears bright red hips in autumn, making it a long-favoured landscape and hedging rose.

Growth habit: Arching, spreading, mounded deciduous shrub with glossy dark-green foliage; flowers borne in large clusters, followed by small orange-red hips in autumn if not deadheaded.

What fertiliser bonica rose actually wants — and why

Bonica Rose 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 bonica rose: 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 bonica rose, 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 bonica rose:

Feed in early spring and again after the first flush with a balanced rose fertiliser to sustain repeat bloom; ease off about six weeks before frost. Bonica is undemanding, so a spring compost mulch is often sufficient in decent soil. 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 bonica rose 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 bonica rose

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

Signs you are over-feeding bonica rose

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for bonica rose:

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 bonica rose

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 bonica rose care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Container-grown bonica rose 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 bonica rose

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 bonica rose — frequently asked questions

What fertiliser does bonica rose 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. Bonica Rose 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 bonica rose?

Feed in early spring and again after the first flush with a balanced rose fertiliser to sustain repeat bloom; ease off about six weeks before frost. Bonica is undemanding, so a spring compost mulch is often sufficient in decent soil. Feed in early spring and again after the first flush with a balanced rose fertiliser to sustain repeat bloom; ease off about six weeks before frost. Bonica is undemanding, so a spring compost mulch is often sufficient in decent soil. 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 bonica rose?