Rose Bush Fertilizer
Support sturdy canes, healthy leaves, and repeat flushes of blooms with a liquid fertilizer made for rose bushes. It provides consistent nutrition for healthy growth while keeping plant care straightforward.
Simply mix it with water as directed for an easy way to provide consistent nutrition throughout the growing season.
Why You'll Love It
- Bloom Support For bushes that give one strong flush then little repeat bloom.
- Healthy Foliage Feeds a bush whose lower leaves yellow between the veins.
- Steady Growth Supports canes sturdy enough to hold heavy blooms upright.
Made by growers
More than a bottle on a shelf.
- Talk to real plant people. The team that mixes the formula answers your email.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- We're growers, not resellers. We use this on our own plants before it ships.
- Bundle savings only here. Pair any two TPS formulas — your order ships free.
Liquid rose bush fertilizer with a 3-3.6-5.1 NPK plus kelp. Supports sturdy canes, healthy leaves, and repeat flushes of blooms.
How to Use Rose Bush Fertilizer
| Method | Amount | How Often |
|---|---|---|
| Watering can | 2 Tbs (30 mL) per gallon of water | Spring & summer: every 1–2 weeks |
| Watering can | Same dilution | Fall & winter: every 4 weeks |
| Hose end sprayer | Set dial to 1 oz (30 mL) setting | Spring & summer: every 1–2 weeks |
| Leaf misting (optional) | 1 tsp per quart (32 oz) of water | Every 1–2 weeks |
Mix into your normal watering — no separate feeding routine needed.
What's Inside
The 3-3.6-5.1 ratio is built for a bush that blooms in repeated flushes and burns through nutrients doing it. Phosphorus at 3.6% and potassium at 5.1% both outweigh nitrogen at 3%, keeping energy on flower production rather than leafy cane growth — the difference between a rose bush that reblooms all season and one that runs to foliage after the first flush. All of the nitrogen is nitrate nitrogen, the form roots absorb directly, so response is fast and burn risk stays low.
Beyond NPK: sea kelp (Ascophyllum nodosum) for natural growth compounds, plus calcium at 2.1% — unusually high, and what builds thick canes and firm petals that hold up through heat — magnesium (0.75%), iron, manganese, zinc, boron, and copper. Magnesium especially matters for rose bushes, where a shortfall shows as yellowing between the veins on older leaves and weaker blooms above them.
Made For
Every kind of rose bush: hybrid teas, floribundas, grandifloras, shrub and landscape roses, knock-outs, and miniatures — in beds, borders, foundation plantings, and patio containers.
Problems It Solves
- Few blooms after a strong first flush
- Leafy, vigorous bushes with little flowering
- Yellowing between the veins on lower leaves
- Weak canes and blooms that wilt fast in heat
FAQs
How often should I feed my rose bushes?
Every 1–2 weeks during spring and summer while they're actively growing and blooming, and every 4 weeks in fall and winter. Diluting into your regular watering (2 Tbs per gallon) keeps nutrition steady — rose bushes are heavy feeders and rebloom best on consistent feeding rather than occasional heavy doses.
My rose bush grew lots of leaves but few flowers — will this help?
That's usually nitrogen-heavy feeding pushing foliage at the expense of blooms. This formula runs phosphorus and potassium above nitrogen to shift energy toward flowering. Pair it with full sun and deadheading spent blooms, and you should see stronger repeat flushes through the season.
When should I stop feeding my rose bushes for winter?
Feed every 4 weeks through fall, then ease off as the bush goes dormant — pushing tender new growth late in the season leaves it vulnerable to cold. Resume the spring and summer schedule when new growth breaks in spring. In frost-free climates rose bushes may bloom nearly year-round and can stay on the lighter fall schedule.
Will this burn my rose bushes?
No — at the directed dilution, the formula is designed for regular use. All-nitrate nitrogen and low salt concentration make burn very unlikely. For newly planted or bare-root bushes still establishing, start at half strength for the first two feedings.
Can I use it on knock-out and landscape roses too?
Yes, at the same dilution. Knock-outs and landscape roses are bred to rebloom heavily, so they benefit from steady feeding just as much as hybrid teas. Use the watering can rate for containers and smaller plantings and the hose end sprayer for large beds and hedges.
When will I see results?
New growth typically comes in greener within the first couple of weeks, and yellowing from magnesium shortfall corrects on new leaves. Bloom improvement follows the bush's own rhythm — consistently fed rose bushes set noticeably heavier repeat flushes over the following weeks.
Related Products
Rose Fertilizer Flowering Fertilizer Mycorrhizal Fungi for Gardens