Acid-Friendly Organic Evergreen
Best Organic Evergreen Fertilizer (4-6-4): Slow-Release Nutrition from Composted Manure for Hollies, Azaleas, Rhododendrons & Acid-Loving Evergreens Buy on Old Cobblers Farm
Organic evergreen feeding at its best. The NCO Pro-Holly base is specifically formulated for acid-loving evergreens — hollies, azaleas, rhododendrons, and camellias. Composted chicken manure provides gentle, biologically-driven nutrition that feeds the soil and the tree simultaneously.
Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer
by Organic Fertilizer — Littleton, NH
4-6-4
N-P-K Ratio
"The organic evergreen specialist built on NCO Pro-Holly — a formula designed for acid-loving species. 6% phosphorus supports root development while the composted manure base feeds soil biology and provides the full-spectrum micronutrients evergreens need for deep green, dense foliage."
4-6-4
Organic NPK
Pro-Holly
Acid-Lover Base
250 ft²
Coverage / 5 lb bag
4 Sizes
5, 10, 15, 20 lbs
NCO Pro-Holly Base — Acid-Lover Specialist
Built on North Country Organics Pro-Holly, specifically formulated for acid-loving evergreens. Supports the low-pH soil environment hollies, azaleas, and rhododendrons require.
6% Phosphorus for Root Health
Higher phosphorus ratio supports the root development that evergreens need for nutrient uptake, water access, and anchoring in landscape soils.
Crown Diameter Dosing
1 lb per 2 ft of crown diameter, broadcast under the drip line. Simple measurement-based application that scales to any evergreen size.
Spring + Fall Schedule
Spring application fuels new growth when foliage emerges. Fall application supports root growth and stores energy for winter hardiness.
Full-Spectrum Composted Manure
Composted chicken manure delivers NPK plus calcium, trace minerals, humic compounds, and beneficial microbes. Complete organic nutrition, not just three numbers.
Winter Hardiness Support
Fall application of potassium and phosphorus strengthens cell walls and builds energy reserves before winter. Well-fed evergreens resist desiccation and cold damage.
All Acid-Loving Evergreens
Hollies, azaleas, rhododendrons, camellias, mountain laurel, pieris, blueberries — plus general evergreens like pines, spruces, and arborvitae.
Trusted by 20,000+ Growers
Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.
| NPK Ratio | 4-6-4 |
| Item Form | Granular |
| Coverage | 170–250 sq ft per 5 lb bag |
| Category | Organic Fertilizer |
| Type | Plant-Specific Organic |
| Sizes | 5 lb | 10 lb | 15 lb | 20 lb |
| NPK | 4-6-4 |
| Nitrogen | 4% |
| Phosphorus | 6% |
| Potassium | 4% |
| Base | NCO Pro-Holly |
| Form | Granular |
| Rate | 1 lb / 2 ft crown diameter |
| Method | Broadcast under drip line |
| Frequency | Spring + Fall |
| Sizes | 5, 10, 15, 20 lb bags |
| Best For | Hollies, azaleas, rhododendrons, camellias, acid-loving evergreens |
What We Love
✓ NCO Pro-Holly base designed for acid-loving evergreens
✓ 6% phosphorus supports root health and establishment
✓ Composted manure delivers full-spectrum organic nutrition
✓ Spring + fall schedule supports growth and winter hardiness
✓ Works for hollies, azaleas, rhododendrons, and general evergreens
Worth Noting
— Lower total NPK than synthetic evergreen formulas
— Does not acidify soil — add sulfur separately if pH correction needed
Buy on Old Cobblers Farm →
Available in 5 lb | 10 lb | 15 lb | 20 lb
| Feature | Old Cobblers Farm™ Wicked Organics Organic Evergreen Fertilizer Old Cobblers Farm | Holly-Tone Organic Evergreen & Azalea Plant Food Espoma | Acid Mix Fertilizer Down To Earth | Acid Lovers Azalea, Camellia, Rhododendron & Maple Fertilizer Dr. Earth | Azalea, Camellia & Rhododendron Granular Fertilizer Jobe's Organics | Happy Frog Acid Loving Plants Fertilizer FoxFarm | Holly Care Organic Fertilizer Fertrell | Azalea, Camellia & Rhododendron Food True Organic | Holly-Tone Espoma | Acid Lovers Dr. Earth | Azalea, Camellia & Rhododendron Jobe's Organics | Acid Mix Down To Earth | Happy Frog Acid Loving Plants FoxFarm | Holly Care Fertrell | Azalea, Camellia & Gardenia Food E.B. Stone | Rhododendron, Azalea & Camellia G&B Organics | 4-6-4 Natural & Organic Plant Food Sustane | Azalea-Tone Espoma |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPK | 4-6-4 | 4-3-4 | 4-3-6 | 3-4-3 | 4-3-4 | 4-5-3 | 4-6-4 | 4-5-4 | 4-3-4 | 3-4-3 | 5-4-3 | 4-3-6 | 4-5-3 | 4-6-4 | 5-5-3 | 4-5-2 | 4-6-4 | 4-3-4 |
| Form | Granular | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Coverage | 170–250 sq ft per 5 lb bag | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | Not listed | 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 | $16–$18 / 8 lb | $13–$17 / 5 lb | $16–$17 / 4 lb | $8–$12 / 4 lb | $15–$17 / 4 lb | $14.95 / 10 lb | $8–$12 / 4 lb | ~$8 (4 lb), ~$28 (18 lb) | ~$9-10 (4 lb) | ~$7-9 (4 lb) | ~$11-14 (5 lb) | ~$12-16 (4 lb) | ~$15-22 (10 lb) | ~$10-13 (4 lb) | ~$10-14 (4 lb) | ~$12-18 (5 lb) | ~$8-10 (4 lb) |
| Our Take | The organic evergreen specialist built on NCO Pro-Holly — a formula... | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%. | — | — | — | — | — | — | — | — | — | — |
The Competition
Holly-Tone Organic Evergreen & Azalea Plant Food
by Espoma
4-3-4
N-P-K
Price$16–$18 / 8 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Acid Mix Fertilizer
by Down To Earth
4-3-6
N-P-K
Price$13–$17 / 5 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Acid Lovers Azalea, Camellia, Rhododendron & Maple Fertilizer
by Dr. Earth
3-4-3
N-P-K
Price$16–$17 / 4 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Azalea, Camellia & Rhododendron Granular Fertilizer
by Jobe's Organics
4-3-4
N-P-K
Price$8–$12 / 4 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Happy Frog Acid Loving Plants Fertilizer
by FoxFarm
4-5-3
N-P-K
Price$15–$17 / 4 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Holly Care Organic Fertilizer
by Fertrell
4-6-4
N-P-K
Price$14.95 / 10 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Azalea, Camellia & Rhododendron Food
by True Organic
4-5-4
N-P-K
Price$8–$12 / 4 lb
Fertrell Holly Care is the only exact 4-6-4 NPK match. Espoma Holly-Tone dominates distribution and brand loyalty. Most competitors run lower phosphorus (3%) versus Wicked Organics' 6%.
Holly-Tone
by Espoma
4-3-4
N-P-K
Sizes4, 8, 18, 27, 36, 50 lb
Price~$8 (4 lb), ~$28 (18 lb)
IngredientsFeather meal, poultry manure, bone meal, alfalfa meal, greensand, sulfate of potash, sulfur; Bio-tone microbes
OrganicOIM Registered
Acid Lovers
by Dr. Earth
3-4-3
N-P-K
Sizes1, 4, 12 lb
Price~$9-10 (4 lb)
IngredientsCottonseed meal, fish bone meal, alfalfa meal, feather meal, potassium sulfate, kelp; TruBiotic + mycorrhizae
OrganicOMRI, CDFA, CCOF, NOP
Azalea, Camellia & Rhododendron
by Jobe's Organics
5-4-3
N-P-K
Sizes4 lb
Price~$7-9 (4 lb)
IngredientsBone meal, feather meal; Biozome
OrganicOMRI Listed
Acid Mix
by Down To Earth
4-3-6
N-P-K
Sizes1, 5, 15, 25 lb
Price~$11-14 (5 lb)
IngredientsCottonseed meal, fish bone meal, langbeinite, rock phosphate, kelp, humates
OrganicOMRI, CDFA
Happy Frog Acid Loving Plants
by FoxFarm
4-5-3
N-P-K
Sizes4 lb
Price~$12-16 (4 lb)
IngredientsAlfalfa meal, fish bone meal, feather meal, sulfate of potash, sulfur, kelp; mycorrhizal fungi
OrganicOMRI, CDFA
Holly Care
by Fertrell
4-6-4
N-P-K
Sizes10, 25, 50 lb
Price~$15-22 (10 lb)
IngredientsFeather meal, calcium carbonate, blood meal, bone charcoal, zeolite, peanut meal, kelp, sulfur
OrganicCertifiable organic
Azalea, Camellia & Gardenia Food
by E.B. Stone
5-5-3
N-P-K
Sizes4, 15 lb
Price~$10-13 (4 lb)
IngredientsBlood meal, feather meal, cottonseed meal, bone meal, chicken manure, bat guano, alfalfa, kelp; mycorrhizae
OrganicCDFA
Rhododendron, Azalea & Camellia
by G&B Organics
4-5-2
N-P-K
Sizes4, 12, 25, 50 lb
Price~$10-14 (4 lb)
IngredientsAlfalfa meal, bone meal, feather meal, dehydrated manure, kelp, humic acid, sulfate of potash; mycorrhizae
OrganicOMRI Listed
4-6-4 Natural & Organic Plant Food
by Sustane
4-6-4
N-P-K
Sizes5, 20, 40 lb
Price~$12-18 (5 lb)
IngredientsComposted turkey litter, feather meal, bone meal, sulfate of potash; ~6% humic acid
OrganicOMRI Listed
Azalea-Tone
by Espoma
4-3-4
N-P-K
Sizes4 lb
Price~$8-10 (4 lb)
IngredientsFeather meal, poultry manure, bone meal, alfalfa meal, greensand; Bio-tone microbes
OrganicOIM Registered
NCO Pro-Holly Base — Acid-Lover Specialist
Built on North Country Organics Pro-Holly, specifically formulated for acid-loving evergreens. Supports the low-pH soil environment hollies, azaleas, and rhododendrons require.
6% Phosphorus for Root Health
Higher phosphorus ratio supports the root development that evergreens need for nutrient uptake, water access, and anchoring in landscape soils.
Crown Diameter Dosing
1 lb per 2 ft of crown diameter, broadcast under the drip line. Simple measurement-based application that scales to any evergreen size.
Spring + Fall Schedule
Spring application fuels new growth when foliage emerges. Fall application supports root growth and stores energy for winter hardiness.
Common Questions
