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Liquid vs granular rose fertiliser

Updated: October 2026

You have a watering-can concentrate in one tab and a twice-yearly carton in the other, and amazon.co.uk will sell you both in one box. Liquid vs granular rose fertiliser is the form decision: granules hold the season on a border, liquid tops up pots and the flowering weeks, and you buy both only if you will use both. The [rose fertiliser liquid comparison](/hub/fertiliser-soil-and-bark-mulch/rose-fertiliser-liquid) shows the form column. This page keeps one recommendation with a condition, including the Topline bundle in this set. We compared amazon.co.uk listings and public UK sources. This is not a laboratory test.

You have a watering-can concentrate in one tab and a twice-yearly carton in the other, and amazon.co.uk will sell you both in one box.

Our top picks

Westland Westland rose liquid 1 L

Best overall

Westland Westland rose liquid 1 L
9.4/10about £6.58
View offer
Topline Miracle Grow rose liquid and granule bundle

Alternative

Topline Miracle Grow rose liquid and granule bundle
9.2/10about £16.99
View offer
Empathy Empathy After Plant rose feed 1 L

Best value

Empathy Empathy After Plant rose feed 1 L
9.0/10about £6.99
View offer
On this page
  1. 1.What each form is for
  2. 2.Pots, borders, and using both
  3. 3.The bundle is two products
  4. 4.The recommendation, with a condition

What each form is for

Granules are the base feed. Peter Beales puts them down in March and in July. The RHS uses about 70 g per square metre twice a year on border roses. David Austin uses a dry feed in spring, then a liquid once the plant is in flower. Liquid is the boost and the pot default: every 7–10 days in flower for Peter Beales, 7–14 days on Westland maker pages, fortnightly for Doff. You pour it on moist soil. It is not a coated granule, even if a listing says slow-release. A bed gets the carton and a mulch. The pots get a fortnightly liquid. Leftover granules in a 30 cm pot burn the compost. Label checks sit on the liquid rose fertiliser buying guide.

Pots, borders, and using both

After a March granule, liquid covers the flowering weeks. It is not a second base feed. A Westland or Doff litre beside Toprose is a summer extra unless the can stays in the shed. On a patio, liquid is the default, about fortnightly. A spring top-dress on a large pot does not replace the can. The interval sits on liquid rose feed for pots. Buy both forms when you have borders and pots. Skip the second form if you only have patio roses, or only a border and no wish to use a can. A feed does not treat black spot in either form.
Westland Westland rose liquid 1 L

Testsieger

Westland Westland rose liquid 1 L
9.4/10about £6.58
View offer

The bundle is two products

The Topline listing is 800 ml of liquid, 900 g of coated granules, and a card, about £16.99, 4.6 from 111 reviews. The title says Miracle Grow. The brand field says Topline. Dilution is not specified. It is two products, not a third chemistry. Several reviews mention the granules and skip the liquid. Use both halves, or you are paying about £16.99 for a carton that stays in the shed. Skip it if you already own a March carton or need a printed rate. A single liquid pick sits on best liquid rose feed.

The recommendation, with a condition

Buy granules for a border’s season base. Buy liquid for pots and for the flowering weeks. Buy the Topline bundle only when you will use both halves this year. If you want a weekly can and nothing else, stay with a 1 L concentrate. Liquid stops by the end of August on Peter Beales and on the RHS container page. One Westland maker page runs to September. This page does not invent a third date.

Common questions

Should I buy liquid or granules for roses?
Granules for a border’s twice-yearly base. Liquid for patio pots and for a summer boost once buds form. If you have both situations, you can own both forms. If you have only pots, start with liquid.
Can I use both?
Yes, when the jobs are different. A March granule on the bed plus a 7–14 day liquid in flower is the Peter Beales pattern. Do not pour a strong liquid the same week you scattered a full July measure unless the labels say that is the programme.
What is in the Miracle Grow bundle?
On this listing, 900 g of coated granules, 800 ml of concentrated liquid, and a Topline card. The brand field is Topline. Dilution is not specified. It is two products, not a new analysis.
Do pot roses still need granules?
Not as the main feed. The RHS default on containers is a fortnightly liquid. A light spring top-dress on a large pot is optional. A full carton in a 30 cm pot is how you scorch compost.
How often is each form?
Granules: about twice a year on borders, March and July in the Peter Beales pattern, and about 70 g per square metre twice on the RHS guide. Liquid: every 7–14 days in the growing season, or fortnightly on pots, then stop by late August.
Is liquid a waste if I already use Toprose?
Not if you have pots, or if you want a flowering-week boost on the bed. It is a waste if the can stays in the shed after you already did the two granule rounds and you have no containers.
When do I stop each form?
Stop scattering granules after the summer application; do not keep topping up into autumn. Stop liquid by the end of August on Peter Beales and on the RHS container page. One Westland maker page runs to September. This page does not invent a third date.

Related pages

How to use liquid rose feed

Rose fertiliser liquid

Best liquid rose feed UK for one stated garden job

Rose fertiliser liquid buying guide before you buy

Liquid rose feed for pots, fortnightly not stronger

Sources

Public UK and maker sources used for this page in October 2026. Prices, stars and review counts are from the eight amazon.co.uk listings as of 21 October 2026. An organic title is not a named control body. A feed does not treat black spot. Maker NPK and dilution lines that are missing on Amazon are marked as maker pages, not as listing text.

  1. RHS, growing roses (retrieved 21 October 2026)
  2. RHS, fertilisers (retrieved 21 October 2026)
  3. RHS, rose black spot (retrieved 21 October 2026)
  4. Defra, UK fertilisers regulatory reform 2026 (retrieved 21 October 2026)
  5. GOV.UK, product marking by sector (retrieved 21 October 2026)
  6. B&Q, Westland rose liquid plant feed 1 L (retrieved 21 October 2026)
  7. Peter Beales, feeding your roses (retrieved 21 October 2026)
  8. Neudorff, Azet Rose Feed (retrieved 21 October 2026)