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Old Cobblers Farm™ Wicked Growth Garden & Tomato Fertilizer
Learn how 5-10-10 fertilizer boosts tomato and vegetable yields. Application rates, best crops, and expert growing tips from Old Cobblers Farm.
Old Cobblers Farm™ Wicked Growth Garden & Tomato Fertilizer
5-10-10 is a low-nitrogen, high-phosphorus and potassium fertilizer formula specifically designed for fruiting vegetables and garden crops. Unlike balanced formulas like 10-10-10 or 19-19-19, the reduced nitrogen ratio prevents the common mistake of over-feeding nitrogen to tomatoes and peppers — which causes lush green plants that produce fewer, lower-quality fruits.
The guaranteed analysis breaks down to 5% total nitrogen (4% ammoniacal nitrogen for steady soil-level feeding, plus 1% urea nitrogen for a quick initial boost), 10% available phosphoric acid (P2O5) for root and flower development, and 10% soluble potash (K2O) for fruit quality and disease resistance. This P-K heavy ratio is exactly what fruiting crops demand once they transition from vegetative growth into flowering and fruit production.
NPK
5-10-10
Type
Non-Organic
Derived From
Ammoniacal Nitrogen (4%), Urea Nitrogen (1%), Available Phosphoric Acid (P2O5) 10%, Soluble Potash (K2O) 10%
Best For
Tomatoes|Peppers|Squash|Cucumbers|Melons|Beans|Corn|Lettuce
Brand
Wicked Growth
NPK Breakdown
N
5
Provides moderate nitrogen to support steady, controlled vegetative growth without excessive leafiness that diverts energy from fruit production.
P
10
Promotes strong root systems and supports early flowering and fruit set — critical for tomato and pepper production.
K
10
Increases plant resilience, boosts fruit quality, size, and flavor while improving disease resistance.
What Is It ?
Garden & Tomato Fertilizer 5-10-10 is a purpose-built granular fertilizer designed to support vigorous growth and bountiful harvests in vegetables and tomatoes. With a nutrient ratio that emphasizes phosphorus and potassium over nitrogen, this formula prioritizes what fruiting crops need most — strong root development, heavy flowering, and high-quality fruit production — rather than excessive leaf growth. The 5% nitrogen (4% ammoniacal, 1% urea) provides enough energy for healthy foliage without pushing soft, leggy growth that's vulnerable to pests and disease. The 10% phosphorus drives deep root systems and early fruit set, while 10% potassium enhances fruit size, flavor, and overall plant resilience. This makes Wicked Growth 5-10-10 an excellent choice for tomatoes, peppers, squash, cucumbers, beans, corn, and other garden crops where harvest quality matters more than canopy size. Old Cobblers Farm™ Wicked Growth Garden & Tomato Fertilizer delivers balanced nutrition tuned specifically for the fruiting stage of vegetable production.
When To Apply ?
For new garden beds, broadcast 2-3 lbs per 100 sq ft and incorporate into the top 6 inches of soil before planting. For established plants, side-dress by sprinkling fertilizer in a band 4-6 inches from the plant stem, then water in. For tomatoes, begin side-dressing after the first fruit set and continue every 4-6 weeks. The lower nitrogen content makes this formula more forgiving than high-N blends — less risk of burn or excessive vegetative growth. Avoid applying directly to foliage or stems.
How to Apply ?
1.
Soil Test
Test your soil to confirm P and K levels need supplementing before applying.
2.
Calculate Rate
Calculate coverage — use 2–3 lbs per 100 sq ft for garden beds.
3.
Broadcast / Side-Dress
Spread evenly over the planting area or side-dress along crop rows for targeted mid-season feeding.
4.
Incorporate
Work lightly into the top 2–3 inches of soil if applying before planting.
5.
Water In
Water thoroughly after application to activate nutrients and prevent granule burn on roots.
6.
Reapply
Reapply every 4–6 weeks throughout the growing season to sustain fruiting and flowering.
7
Broadcast / Side-Dress
Spread evenly over the planting area or side-dress along crop rows for targeted mid-season feeding.
How To Store
Store in a cool, dry place in the original sealed bag. Avoid inhalation of dust during application. Wash hands thoroughly after use. Keep away from children, pets, and water sources.
FAQs
1.
What is 5-10-10 fertilizer used for?
5-10-10 fertilizer is a low-nitrogen, high-phosphorus and high-potassium blend used for plants that need strong root development, flowering, and fruiting without excessive leafy growth. It is especially popular for root crops like potatoes and carrots, flowering plants, bulbs, fruit trees, and established perennial gardens. The reduced nitrogen prevents leggy, soft growth while the elevated phosphorus and potassium promote deep roots, vibrant blooms, and high-quality fruit. Old Cobblers Farm™ Wicked Growth 5-10-10 Multi-Use Fertilizer is an all-purpose solution for lawns, flower beds, vegetable gardens, and more.
2.
What is 5-10-10 fertilizer?
5-10-10 fertilizer is a granular plant food with an NPK ratio of 5% nitrogen, 10% phosphorus, and 10% potassium. It is classified as a low-nitrogen fertilizer, which makes it ideal for applications where you want to encourage root growth, flowering, and fruiting rather than leafy vegetative growth. The higher phosphorus and potassium levels support strong roots, stress tolerance, and reproductive development in plants. It is one of the most versatile fertilizer formulas available for home gardens and farms. Old Cobblers Farm™ Wicked Growth 5-10-10 Fertilizer delivers premium ingredients for reliable, balanced results.
3.
Is 5-10-10 a good fertilizer for tomatoes?
Yes, 5-10-10 is a solid choice for tomatoes, particularly during the flowering and fruiting stages. The low nitrogen prevents excessive vine growth while the higher phosphorus supports blossom development and root strength. The elevated potassium improves fruit quality, size, flavor, and disease resistance. Many experienced tomato growers prefer 5-10-10 over balanced fertilizers because it encourages the plant to put energy into fruit production rather than foliage. Apply at planting and side-dress every 4–6 weeks during the growing season. Old Cobblers Farm™ Wicked Growth 5-10-10 Multi-Use Fertilizer promotes strong roots, healthy blooms, and heavy tomato harvests.
4.
Where can I buy 5-10-10 fertilizer?
5-10-10 fertilizer can be purchased online from specialty retailers like Old Cobblers Farm at oldcobblersfarm.com, as well as through major marketplaces including Amazon, eBay, and Walmart. While big-box stores like Home Depot and Lowe's may carry some 5-10-10 options, specialty farm and garden suppliers typically offer higher-quality formulations at better value. Old Cobblers Farm™ Wicked Growth 5-10-10 Multi-Use Fertilizer is available in multiple bag sizes and ships nationwide, making it easy to get premium fertilizer delivered right to your door.
5.
What is a low nitrogen fertilizer?
A low nitrogen fertilizer is any fertilizer where the first NPK number (nitrogen) is significantly lower than the other two numbers. 5-10-10 is a classic example — with only 5% nitrogen compared to 10% each of phosphorus and potassium. Low nitrogen fertilizers are used when you want to promote root development, flowering, and fruiting without stimulating excessive leaf and stem growth. They are ideal for root crops, bulbs, flowering annuals and perennials, established trees, and fall applications. Old Cobblers Farm™ Wicked Growth 5-10-10 Fertilizer is one of the most trusted low-nitrogen options for home gardens and farms.
6.
Can I use 5-10-10 fertilizer on my lawn?
While 5-10-10 can be used on lawns, it is not the ideal primary lawn fertilizer because lawns typically benefit from higher nitrogen for green growth and density. However, 5-10-10 is excellent as a starter fertilizer for newly seeded lawns or sod because the higher phosphorus promotes rapid root establishment. It also works well as a fall fertilizer to build root strength and winter hardiness without encouraging tender new leaf growth that could be damaged by frost. Old Cobblers Farm™ Wicked Growth 5-10-10 Multi-Use Fertilizer is a versatile option for lawns, gardens, flowers, and crops.
7
Is there an organic 5-10-10 fertilizer?
Yes, Old Cobblers Farm offers organic alternatives with similar nutrient profiles. While exact organic 5-10-10 formulations are less common due to the nature of organic inputs, several Wicked Organics products deliver comparable nutrition using all-natural ingredients. The Wicked Organics 4-6-4 and 2-3-3 formulas provide similar low-nitrogen, higher-phosphorus and potassium ratios from organic sources like bone char, sulfate of potash, vegetable protein meals, and animal protein meals. These OMRI-Listed options are ideal for organic gardens that need the benefits of a 5-10-10-style fertilizer. Visit oldcobblersfarm.com to explore the full Wicked Organics lineup.