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Rose black spot spray

Updated: October 2026

You are looking at a rose in a wet British summer, the leaves are yellow around dark patches, and a spray is the first thing the shelf wants to sell you. A rose black spot spray only earns its place after you have named the disease and cleared the fallen leaves. The bottles, prices, and review counts sit on the [rose fungicide comparison](/hub/plant-accessories/rose-fungicide). We wrote this on 16 October 2026 from those listings and the Royal Horticultural Society’s black-spot page. We did not run a garden trial, and a spray is not a promise of a clean bush by the weekend. If you buy through our amazon.co.uk links, we may earn a commission at no extra cost to you.

You are looking at a rose in a wet British summer, the leaves are yellow around dark patches, and a spray is the first thing the shelf wants to sell you.

Our top picks

BugClear RoseClear 3 in 1, 2 × 800 ml

Best overall

BugClear RoseClear 3 in 1, 2 × 800 ml
4.2/10about £10.98
View offer
Provanto Provanto Fungus Fighter Plus, 2 × 1 L

Rank 2

Provanto Provanto Fungus Fighter Plus, 2 × 1 L
8.9/10about £16.00
View offer
Phostrogen Toprose Fungus Control and Protect, 1 L

Best value

Phostrogen Toprose Fungus Control and Protect, 1 L
8.6/10about £8.52
View offer
On this page
  1. 1.Purple-black spots, yellow leaves, early fall
  2. 2.Not mildew, not rust, not aphids
  3. 3.Fallen leaves before the next spray
  4. 4.Sprays in this set that name black spot

Purple-black spots, yellow leaves, early fall

The Royal Horticultural Society describes rose black spot, Diplocarpon rosae, as a purple or black patch on the upper leaf, often with yellow tissue around it, and leaves that drop early. Young stems can carry small black scabby lesions. Spores spread in water and on the wind. The fungus overwinters on fallen leaves and in stem infections. If the mark is a white powder, or orange pustules, you are on the wrong disease. The RHS says fungicides, including organic ones, are not the first step. A spray on a bush still sitting in last month’s leaves puts the same spores back into the splash.

Not mildew, not rust, not aphids

Dark spots with yellowing and leaf fall are black spot. Greyish-white powder on young growth is powdery mildew. It prefers dry spells and does not need long periods of wet leaf. Yellow spots on top with orange pustules underneath are rust. Aphids are a separate problem, listed above the fungi. A white powder on new shoots is mildew, not black spot, even if both can be on one bush. Rose Guard Natural names powdery mildew and does not name black spot. Using it because the title says rose defence is how an about £19.99 twin misses the disease you can see. If you are still unsure, the rose fungicide buying guide keeps the wider tree.
BugClear RoseClear 3 in 1, 2 × 800 ml

Testsieger

BugClear RoseClear 3 in 1, 2 × 800 ml
4.2/10about £10.98
View offer

Fallen leaves before the next spray

Pick up the fallen leaves, and do not leave them in a pile beside the rose. The RHS says the fungus overwinters there, and also in infections on young stems and buds, so clearing delays the disease and does not finish it. A mulch of at least 5 cm can bury what you cannot collect. That figure is from the RHS note, not from a spray label. A small black scab on a young stem is still black spot. One spray after a tidy-up is not a season’s clearance. The systemic bullets say up to 3 weeks, and Toprose reviewers say the spots can return. Spotted leaves do not turn green. How to cover both surfaces is on how to use rose fungicide.

Sprays in this set that name black spot

Offer a bottle as a rose black spot spray only when the listing prints black spot. Toprose Fungus Control and Protect, 1 L at about £8.52, 4.4 from 1,935 reviews, names black spot, powdery mildew, white rust, and leaf spot, contact and systemic, up to 3 weeks. Provanto Fungus Fighter Plus, 2 × 1 L at about £16, 4.4 from 6,900 reviews, adds box blight. RoseClear 3 in 1, about £10.98 for 2 × 800 ml, names black spot, mildew, and rust, plus aphids, and fatty acid and sulphur. That is not RoseClear Ultra, HSE MAPP 14854. Topline Clear Bug at about £16.99 also claims black spot, and reviews include a white deposit that rain does not remove. Westland says disease spores, not black spot. Ecofective targets insects. Vitax names no disease. This page does not rank a winner.

Common questions

Are these purple-black spots black spot or something else?
Match them to the RHS description: a purple or black patch on the upper leaf, yellow tissue around it, and early leaf fall, sometimes with a small black scab on a young stem. Greyish-white powder is mildew. Orange pustules under the leaf are rust. If you cannot separate those, do not buy on the word fungicide alone. The listing has to name the disease you can see.
Why are the leaves yellow and falling in early summer?
Yellow tissue around a dark patch, then leaf drop, is the black-spot pattern the RHS describes, and a wet summer is enough for it. The fungus splashes in water and also arrives on the wind, so a single bush in a dry corner can still catch it. Yellowing without the dark patch is a different problem, and a spray named for black spot will not explain it.
Do I have to pick up the fallen leaves?
Yes, if you want the spray to have less old fungus to splash back up. The RHS says the fungus overwinters on fallen leaves and in stem and bud infections. A mulch of at least 5 cm can bury leaves you cannot collect. Bag the debris rather than composting a cold heap back onto the bed. Hygiene delays the disease. It does not make a closed garden.
Which bottles in this set actually name black spot?
Toprose, in the 1 L and the twin, Provanto Fungus Fighter Plus, RoseClear 3 in 1, Topline Clear Bug, and the Topline concentrate bundle. Tricho Protect’s title recommends the powder for black spot on roses. Westland, Ecofective, Vitax, Provanto Natural, and Rose Guard Natural do not name black spot in the way those rows do. A Garden Fungicides rank does not fill that gap.
Is Ecofective Rose Defender a black spot spray?
Not on this listing. The target species is insects, the bullets do not name a fungus, and no active is in the saved listing. It is about £4.99 with 4.3 from 415 reviews, many of them about greenfly. A minority of reviews mention mildew, rust, or a fungal infection. That is not the same as a label that says black spot.

Related pages

Systemic rose fungicide or sulphur

Rose fungicide

Best rose fungicide: one top pick and the best value

Rose fungicide buying guide: name the symptom first

How to use a rose fungicide without a borrowed gap

Sources

Public UK sources checked for this comparison, plus the amazon.co.uk listing facts in the display file on 16 October 2026. Shelf prices and star lines are those UK figures. HSE and RHS pages are the legal and hygiene frame. They are not a ranking of these twelve bottles.

  1. HSE: garden and home pesticide use (retrieved 16 October 2026)
  2. HSE: Sustainable Use Regulations 2012 guidance (retrieved 16 October 2026)
  3. HSE: MAPP 18223 Fungus Control and Protect (retrieved 16 October 2026)
  4. HSE: MAPP 14854 Roseclear Ultra (retrieved 16 October 2026)
  5. HSE ebulletin, 5 June 2024, myclobutanil (retrieved 16 October 2026)
  6. RHS: rose black spot (retrieved 16 October 2026)
  7. RHS: fungicides for home gardeners (retrieved 16 October 2026)
  8. Westland Fungus Guard (retrieved 16 October 2026)
  9. Toprose SDS, code 86600038 (retrieved 16 October 2026)