Black Marvel Rose & Flower Food
Thirty grams a rose. That is the whole method.
Richgro's Black Marvel Rose & Flower Food is a granular feed at nitrogen 12, phosphorus 2 and potash 10, with fast-acting iron and a soil wetter. The rates are per plant rather than per square metre: 30 grams for an established in-ground rose, 10 grams for a new or bare-rooted one, half rate for miniatures and pots.
Or call the yard on (08) 9434 2290
Real stock, not a swatch. Blended products vary a little batch to batch, so treat these as a guide rather than an exact colour match.
Black Marvel Rose & Flower Food details
Black Marvel Rose & Flower Food at a glance
- Product type
- Granular flower fertiliser
- Brand
- Richgro Black Marvel
- Analysis
- Nitrogen 12, Phosphorus 2, Potash 10
- Also contains
- Fast-acting iron, soil wetter
- Pack in the yard
- 2.5kg — feeds over 75 roses
- Rate
- 30g per established in-ground rose
What Black Marvel Rose & Flower Food suits
What can you use Black Marvel Rose & Flower Food for?
Established garden roses
Thirty grams each, every four to eight weeks through the season. The rate is per plant, so there is nothing to measure out over an area.
Roses coming away after a prune
Start two to three weeks after pruning rather than the same day, then keep the cycle going until winter.
New and bare-rooted roses
Ten grams, not thirty. A new plant has far less root to take it up and the full rate is simply wasted or worse.
Flowering shrubs and annuals
The same 30 grams in the ground and 10 in a pot. It is not only for roses, whatever the picture on the bag says.
How much rose food?
Rated per plant, which makes it easy
Unlike most feeds, this one is measured per plant rather than per square metre. That removes most of the guesswork — you count roses, not metres.
A 2.5kg pack feeds over 75 established roses, which for a home garden is several seasons rather than one.
| Plant | Rate | Worth knowing |
|---|---|---|
| Established in-ground rose | 30g | Every four to eight weeks until winter. |
| New or bare-rooted rose | 10g | Far less root to take it up. The full rate is wasted. |
| Miniature or potted rose | Half the in-ground rate | 15g for an established one. |
| Other flowering plants | 30g in ground, 10g in a pot | Same rates. It is not only for roses. |
Never onto the foliage — the granules burn leaves. Spread to the drip line, at least 10cm clear of the base, and water in.
Why Black Marvel Rose & Flower Food
Why choose Black Marvel Rose & Flower Food?
High potash, low phosphorus
12 nitrogen, 2 phosphorus, 10 potash. Potash is the flowering nutrient and it is the one Richgro have led with here.
Rates per plant, not per area
Thirty grams a rose. No measuring out a bed, no working out how much of the bed a plant occupies — the easiest feed in the range to apply correctly.
Fast-acting iron
Aimed squarely at leaf colour. Yellowing between the veins on a rose is a common Perth complaint and iron is usually part of the answer.
It goes a very long way
Over 75 established roses from the 2.5kg pack. Very few home gardens will get through one in a season.
Getting Black Marvel Rose & Flower Food home
How to get Black Marvel Rose & Flower Food
Collect from the yard
Open seven days at 222 Barrington St, Bibra Lake. The loader puts it straight into your trailer or ute, and someone will tell you whether what you have brought will carry the load.
Borrow one of our trailers free for two hours to get your load home. No charge, no bond.
Have it delivered
Across Perth's southern suburbs, seven days. For a quote we need the address, how much you need, and anything awkward about access — tight driveways, low branches and side access all change which truck we send. Confirm the current cost when you order.
Formats
- 2.5kg — the pack in the yard
- Other sizes in the range — ask what is on the pallet
Using Black Marvel Rose & Flower Food
How to use Black Marvel Rose & Flower Food
Start two to three weeks after pruning
Not the same day. Then feed every four to eight weeks until winter, which is the cycle the plant actually works to.
Spread to the drip line, 10cm off the base
The feeding roots are out under the canopy, not against the stem. Granules banked at the base do nothing useful and can damage the plant.
Never onto the foliage
The granules will burn leaves if they sit on them. Wash or brush any strays off before you water in.
Not in the heat of the day
Early morning or late afternoon, with a good watering in behind it. A plant already stressed by heat does not want a feed on top of that.
When to choose something else
When it is the wrong product
- Not for Australian natives. It is a flowering plant food and there are native foods made for the job.
- Do not apply it onto the foliage. Granules sitting on a leaf will burn it, so brush strays off before watering in.
- The rate is per plant and it is not a suggestion. Thirty grams for an established in-ground rose, ten for a new or bare-rooted one, half rate in pots.
- Pack sizes in this range vary. The one in the yard is 2.5kg — ask what is on the pallet if you want a different size rather than assuming.
Customer reviews
What people say
Black Marvel Rose & Flower Food questions
Black Marvel Rose & Flower Food FAQs
Goes with Black Marvel Rose & Flower Food
Other products you may need
The other Black Marvel
For anything you are growing to eat.
What the bed underneath needs
A feed works better in soil that can hold it.
For the rest of the garden
Lawn feeds and general fertilisers.
Guides for black marvel rose & flower food
Planning your project
Black Marvel Rose & Flower Food quote
Need Black Marvel Rose & Flower Food for your project?
Send us the quantity you need, your suburb, and whether you would like to collect it or have it delivered. If you are not sure how much, put your measurements into the calculator above and we will check it for you.
Or ring the yard on (08) 9434 2290
222 Barrington St, Bibra Lake WA 6163 · Open 7 days
Use the calculator above and the amount lands in the message for you.