Plant Food Outdoor
Outdoor plant food for robust growth and vibrant seasonal blooms. Feeds garden beds, borders, and containers through regular watering for simple, consistent outdoor plant care.
Easy to mix into your normal watering routine, it makes regular feeding simple without adding a complicated extra step.
Why You'll Love It
- Steady Growth Feeds garden beds, borders and containers through regular watering.
- Bloom Support Supports the seasonal blooms outdoor plantings are grown for.
- Easy to Use One outdoor feed that goes on with the hose or can.
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.
Outdoor plant food for robust growth and vibrant seasonal blooms. Feeds garden beds, borders, and containers through regular watering for simple, consistent outdoor plant care.
How to Use Plant Food Outdoor
| Method | Amount | How Often |
|---|---|---|
| Watering can — plants under 12" | 1 Tbs (15mL) per gallon of water | Feed once weekly through the growing season |
| Watering can — plants over 12" | 2 Tbs (30mL) per gallon of water | Feed once weekly through the growing season |
| Hose end sprayer | Set dial to the above feed rates | Feed once weekly through the growing season |
| Leaf misting (optional) | 1 tsp per quart (32 oz) of water | Spray on leaves every 1-2 weeks |
Mix into your normal watering — no separate feeding routine needed. Dose by plant size, not by species: 1 Tbs per gallon under 12", 2 Tbs over. For shrubs and trees, water the root zone out to the edge of the canopy rather than at the trunk.
What's Inside
A 3.6-3-5.1 ratio for outdoor plants that have to survive as well as grow. Nitrogen at 3.6% — all nitrate nitrogen, the form roots absorb directly, fast-acting with low burn risk — drives the leaf and shoot growth that fills in a hedge, a border, or a young tree's canopy. Potassium runs highest at 5.1% because outdoor plants face conditions houseplants never do: heat, wind, drought, and cold. Potassium thickens cell walls, regulates how plants manage water under stress, and improves cold hardiness in the wood that has to make it through winter. Phosphate at 3% feeds root development, which is what carries an outdoor planting through its first years.
Beyond NPK: sea kelp (Ascophyllum nodosum) for natural growth compounds, plus calcium at an unusually high 2.1% and 0.75% magnesium, with iron, manganese, zinc, boron, and copper. Iron and magnesium are the two landscape plantings run short of first — both drive chlorophyll production and both lock up as soil pH drifts upward, showing as yellowing leaves with green veins on new growth while older foliage stays dark.
Made For
Landscape shrubs and hedges, young and established trees, evergreens, perennial borders, roses and flowering shrubs, ornamental grasses, and outdoor containers — anywhere one feed has to serve a mixed yard rather than a single plant.
Problems It Solves
- Mixed plantings where one feed has to cover shrubs, trees, and perennials
- New shrubs and trees slow to establish and fill in
- Yellowing leaves with green veins on landscape plants
- Plantings that look tired after years in the same soil
FAQs
How often should I feed outdoor plants?
Feed once weekly through the growing season, dosing by plant size: 1 Tbs (15mL) per gallon of water for plants under 12", 2 Tbs (30mL) per gallon for anything taller. A hose end sprayer set to those rates covers beds and shrub borders in a pass. For trees and larger shrubs, apply out toward the edge of the canopy where the feeder roots are.
Can I use one fertilizer on my whole yard?
For most of it, yes — shrubs, trees, perennials, and ornamental plantings share the same basic appetite, and the size-based dosing handles the difference between a small perennial and a mature shrub. Two exceptions worth knowing: acid-lovers like azaleas, rhododendrons, and blueberries do better on formulas built for low pH, and lawns have their own nitrogen-heavy requirements.
How is this different from indoor plant food?
Different balance for different conditions. Indoor formulas lean nitrogen-forward, since houseplants are grown for foliage in stable, low-light rooms. This runs potassium-highest at 5.1%, because outdoor plants deal with heat, drought, wind, and cold — potassium is what supports water regulation, stem strength, and cold hardiness. The application methods differ too: this includes a hose end sprayer rate for covering real ground.
When should I start and stop feeding outdoor plants?
Start as growth resumes in spring and feed weekly through the growing season, which is what the label specifies. In cold climates, ease off in late summer for woody plants — shrubs and trees pushed with nitrogen late produce soft growth that won't harden before frost and can die back. Perennials and annuals can be fed later into the season without that concern.
Is this safe to use around vegetables and edibles?
Yes — it supplies the same minerals plants draw from any soil, and there's nothing in it that makes an edible planting off-limits. Follow the label rate and wash produce before eating as you normally would. That said, a garden-specific formula is dosed with vegetable beds in mind; this one is built around mixed ornamental plantings where you're feeding by plant size.
When will I see results?
All the nitrogen is nitrate, absorbed directly by roots, so it starts working with the first watering. Expect deeper green within 1-2 weeks on perennials and fast-growing shrubs. Woody plants move slower: new shoot growth and canopy fill show over 4-8 weeks, and structural progress on trees and hedges is measured across a full season of weekly feeding.
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