High-N Orchid Growth Formula

Best Orchid Fertilizer (30-10-10): High Nitrogen for Vigorous Leaf & Root Growth in Bark-Based Media Buy on Old Cobblers Farm

Updated April 2026 By the Old Cobblers Farm Team

Old Cobblers Farm™ Wicked Growth Orchids Fertilizer

by Wicked Growth — Littleton, NH

30-10-10
N-P-K Ratio
"The orchid specialist with 30% nitrogen — the highest N in the entire Wicked Growth catalog. Triple nitrogen compensates for N-lock in bark media, fuels leaf production, drives root growth, and supports the vegetative vigor that produces next season's flower spikes."
30%
Nitrogen
960
Doses / 5 lb bag
¼ tsp
Per gallon water
4 Sizes
5, 10, 15, 20 lbs
🌺

30% Nitrogen for Bark Media

Bark media harbors microbes that consume nitrogen as they decompose the bark. 30% N ensures enough gets past the microbes to actually reach your orchid's roots.

💧

"Weakly, Weekly" Feeding

¼ teaspoon per gallon, every week during active growth. The orchid world's proven feeding cadence — light, consistent nutrition rather than heavy, infrequent doses.

🌿

Drives Leaf & Root Production

Nitrogen powers new leaf growth and the thick aerial roots that are the hallmark of healthy orchids. More leaves and roots = a bigger, stronger plant capable of spectacular blooms.

📦

960 Doses Per Bag

At ¼ tsp per dose, one 5 lb bag produces approximately 960 individual feedings. That's years of weekly feeding for a typical orchid collection.

🌸

Switch to Bloom Booster for Spikes

Use this 30-10-10 during vegetative growth, then switch to a higher-P formula when flower spikes emerge to support bud development. Growth phase = high N. Bloom phase = high P.

📅

Weekly Growth / Monthly Rest

Feed weekly during active growth periods (new leaves, new roots). Reduce to monthly during rest periods or winter when growth slows naturally.

✅

All Orchid Genera

Phalaenopsis, cattleya, dendrobium, oncidium, vanda, paphiopedilum, miltonia, cymbidium — the entire orchid world benefits from high-N feeding during vegetative growth.

🇺🇸

Trusted by 20,000+ Growers

Developed in Littleton, New Hampshire. Sold nationwide on Amazon, Walmart, eBay, and theoldcobblersfarm.com.

NPK Ratio30-10-10
Derived FromUrea, Monoammonium Phosphate, Muriate of Potash
Item FormGranular (dissolve for use)
Release SpeedQuick-release
Application Rate¼ tsp / gallon water, weekly during active growth
MethodDissolve and drench — "weakly, weekly" method
FrequencyWeekly during active growth | monthly during rest
Sizes5 lb | 10 lb | 15 lb | 20 lb
SupportsPhalaenopsis, cattleya, dendrobium, oncidium, vanda, paphiopedilum, miltonia, cymbidium, all orchids
SetupsIndoor windowsill, greenhouse, orchid shelves, mounted orchids, potted in bark/sphagnum/LECA
What We Love
✓ 30% nitrogen compensates for N-lock in bark-based orchid media
✓ 960 doses per bag — years of weekly feeding from one purchase
✓ "Weakly, weekly" method — orchid-proven feeding cadence
✓ Drives vigorous leaf growth, root development, and plant strength
✓ Works for all orchid genera and media types
Worth Noting
— Growth-phase formula — switch to high-P bloom booster when spikes appear
— 5 lb bag is extreme overkill for most collections — consider smaller packets
Buy on Old Cobblers Farm →
Available in 5 lb | 10 lb | 15 lb | 20 lb
Feature Old Cobblers Farm™ Wicked Growth Orchids Fertilizer Ready-to-Use Orchid Mist Water Soluble Orchid Food Orchid Plus Orchid Bloom Booster Orchid! Liquid Plant Food Orchid Special Orchid Pro Premium Orchid Plant Food Feed ME! Orchid Fertilizer Orchid Food Water Soluble
NPK 30-10-10 0.02-0.02-0.02 30-10-10 20-14-13 11-35-15 1-3-2001 30-10-10 7-8-2006 0.2-0.2-0.4 13-3-15 19-31-17
Phosphorus 10.0% 0.02% 10.0% 14.0% 35.0% 3.0% 10.0% 8.0% 0.2% 3.0% 31.0%
Potassium 10.0% 0.02% 10.0% 13.0% 15.0% 1.0% 10.0% 6.0% 0.4% 15.0% 17.0%
Form Granular (dissolve for use)
Sizes 5 lb | 10 lb | 15 lb | 20 lb 8 oz 8 oz 16 oz 16 oz 8 oz 8 oz, 1.5 lb 8 oz 100 capsules 8 oz 10 oz
Release Speed Quick-release
The Competition

Ready-to-Use Orchid Mist

by Miracle-Gro
0.02-0.02-0.02
N-P-K
Sizes8 oz
Price$6-$9

Water Soluble Orchid Food

by Miracle-Gro
30-10-10
N-P-K
Sizes8 oz
Price$6-$8

Orchid Plus

by Better-Gro
20-14-13
N-P-K
Sizes16 oz
Price$10

Orchid Bloom Booster

by Better-Gro
11-35-15
N-P-K
Sizes16 oz
Price$10

Orchid! Liquid Plant Food

by Espoma Organic
1-3-2001
N-P-K
Sizes8 oz
Price$10

Orchid Special

by Jack's Classic
30-10-10
N-P-K
Sizes8 oz, 1.5 lb
Price$12-$18

Orchid Pro

by Superthrive
7-8-2006
N-P-K
Sizes8 oz
Price$15

Premium Orchid Plant Food

by EarthPods
0.2-0.2-0.4
N-P-K
Sizes100 capsules
Price$20-$25

Feed ME! Orchid Fertilizer

by repotme
13-3-15
N-P-K
Sizes8 oz
Price$18

Orchid Food Water Soluble

by Schultz
19-31-17
N-P-K
Sizes10 oz
Price$8-$10

🌺

30% Nitrogen for Bark Media

Bark media harbors microbes that consume nitrogen as they decompose the bark. 30% N ensures enough gets past the microbes to actually reach your orchid's roots.

💧

"Weakly, Weekly" Feeding

¼ teaspoon per gallon, every week during active growth. The orchid world's proven feeding cadence — light, consistent nutrition rather than heavy, infrequent doses.

🌿

Drives Leaf & Root Production

Nitrogen powers new leaf growth and the thick aerial roots that are the hallmark of healthy orchids. More leaves and roots = a bigger, stronger plant capable of spectacular blooms.

📦

960 Doses Per Bag

At ¼ tsp per dose, one 5 lb bag produces approximately 960 individual feedings. That's years of weekly feeding for a typical orchid collection.

Common Questions