Best Perennial Flower Fertilizer (10-10-10): Balanced Nutrition for Season After Season of Blooms Buy on Old Cobblers Farm
Perennials aren't annuals — they don't need aggressive feeding. A balanced 10-10-10 delivers steady, even nutrition that supports root energy storage, crown health, and reliable bloom production year after year without overstimulating growth.
Old Cobblers Farm™ Wicked Growth Perennial Flowers Fertilizer
by Conventional Fertilizer — Littleton, NH
Balanced for Perennial Biology
Perennials store energy in their crowns and roots for next year's growth. Balanced 10-10-10 feeds evenly without pushing excess top growth that depletes those reserves.
Supports Bloom & Root Equally
10% phosphorus maintains bloom production while 10% potassium strengthens roots and winter hardiness. Neither nutrient dominates — the plant decides where to allocate.
Simple 2x Per Season Schedule
Feed at spring emergence and again after the first flush of bloom. That's it. Perennials thrive on consistent, moderate nutrition — not heavy feeding.
110–220 sq ft Per Bag
At ½–1 cup per 10 sq ft, one 5 lb bag covers a full perennial border. For individual plants, 1–2 tablespoons each.
Won't Overstimulate Growth
High-nitrogen fertilizers make perennials leggy and floppy. 10% N provides just enough for healthy foliage without the need for staking or support.
Improves Winter Hardiness
Potassium strengthens cell walls and regulates water balance heading into dormancy. Well-fed perennials survive harsh winters and emerge stronger in spring.
All Perennial Types
Daylilies, hostas, peonies, coneflowers, black-eyed Susans, astilbe, lavender, sedum, ornamental grasses — one formula handles the entire perennial garden.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 10-10-10 |
| Item Form | Granular |
| Coverage | ~110–220 sq ft perennial beds per 5 lb bag |
| Category | Conventional Fertilizer |
| Type | Flower & Garden |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 10-10-10 |
| Nitrogen | 10% |
| Phosphorus | 10% available phosphate |
| Potassium | 10% soluble potash |
| Form | Granular |
| Rate | ½–1 cup / 10 sq ft |
| Method | Side-dress or broadcast |
| Frequency | 2x per season |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Daylilies, hostas, peonies, coneflowers, all perennials |
| Feature | Old Cobblers Farm™ Wicked Growth Perennial Flowers Fertilizer Old Cobblers Farm | All Purpose Plant Food Vigoro | All Purpose Food Sta-Green | 10-10-10 All-Purpose GroundWork | Flower & Vegetable Food Scotts | Plant-Tone Organic Espoma | Premium Gold All Purpose Dr. Earth | Shake 'n Feed All Purpose Miracle-Gro | Liquid Fish Emulsion Alaska | Slow-Release Fertilizer Milorganite | HumiSync Plant Food Supply Solutions |
|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 10-10-10 | 10-10-10 | 10-10-10 | 10-10-10 | 10-10-10 | 5-3-3 | 4-4-4 | 12-4-8 | 5-1-1 | 6-4-0 | 17-18-18 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — |
| Coverage | ~110–220 sq ft perennial beds per 5 lb bag | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed |
| Price / Size | 5 lb | 10 lb | 15 lb | 20 lb | $22.97 | $9.97 | $19.99 | $11.47 | $15.77 | $13.98 | $14.42 | $29.97 | $24.99 | $17.99 |
| Our Take | The balanced, no-guesswork formula for perennial gardens. Equal NPK... | — | — | — | — | — | — | — | — | — | — |
All Purpose Plant Food
All Purpose Food
10-10-10 All-Purpose
Flower & Vegetable Food
Plant-Tone Organic
Premium Gold All Purpose
Shake 'n Feed All Purpose
Liquid Fish Emulsion
Slow-Release Fertilizer
HumiSync Plant Food
Balanced for Perennial Biology
Perennials store energy in their crowns and roots for next year's growth. Balanced 10-10-10 feeds evenly without pushing excess top growth that depletes those reserves.
Supports Bloom & Root Equally
10% phosphorus maintains bloom production while 10% potassium strengthens roots and winter hardiness. Neither nutrient dominates — the plant decides where to allocate.
Simple 2x Per Season Schedule
Feed at spring emergence and again after the first flush of bloom. That's it. Perennials thrive on consistent, moderate nutrition — not heavy feeding.
110–220 sq ft Per Bag
At ½–1 cup per 10 sq ft, one 5 lb bag covers a full perennial border. For individual plants, 1–2 tablespoons each.
