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Old Cobblers Farm™ Wicked Growth 5-10-10 Fertilizer – Multi-Use Fertilizer
Versatile 5-10-10 fertilizer for gardens, flowers, trees & landscapes. Low nitrogen, high P-K formula. Application rates & tips from Old Cobblers Farm.
Old Cobblers Farm™ Wicked Growth 5-10-10 Fertilizer – Multi-Use Fertilizer
5-10-10 Multi-Use is a low-nitrogen, high-phosphorus and potassium granular fertilizer designed for broad garden and landscape applications. 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), and 10% soluble potash (K2O).
This is the exact same formulation as the Wicked Growth Garden & Tomato Fertilizer and Fall Bulb Fertilizer — all three share identical ingredients and NPK ratios. The difference is positioning: Garden & Tomato targets vegetable production, Fall Bulb targets autumn bulb planting, and Multi-Use serves as the general-purpose option for everything else.
The P-K forward ratio makes 5-10-10 particularly valuable in soils that already have adequate nitrogen from organic matter, compost, or previous applications. Rather than adding more nitrogen and risking lush but weak growth, this formula channels nutrition into root development, flowering, fruit quality, and stress resistance — the structural and reproductive functions that phosphorus and potassium support.
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
Vegetables|Flowers|Fruit Trees|Shrubs|Perennials|Bulbs|Root Vegetables|Landscape Plants
Brand
Wicked Growth
NPK Breakdown
N
5
Provides 5% nitrogen (4% ammoniacal, 1% urea) for controlled vegetative growth without excessive leafiness, keeping energy focused on root development, flowering, and fruit production across a wide range of garden and landscape applications.
P
10
Delivers 10% phosphorus to drive deep root systems, abundant flowering, strong fruit set, and vigorous establishment in newly planted trees, shrubs, and garden crops.
K
10
Supplies 10% potassium to strengthen cell walls, boost disease resistance, improve drought tolerance, enhance winter hardiness, and increase the size, flavor, and quality of fruits and flowers.
What Is It ?
5-10-10 Multi-Use Fertilizer is the versatile, general-purpose version of the same proven formula used in the Wicked Growth Garden & Tomato and Fall Bulb fertilizers. While those products are positioned for specific crops, this multi-use formulation is designed for gardeners who want one P-K forward fertilizer that works across their entire property — vegetables, flowers, shrubs, fruit trees, bulbs, and landscape plantings alike. The reduced nitrogen content (5%) prevents the excessive leafy growth that high-nitrogen fertilizers produce, while the elevated phosphorus (10%) and potassium (10%) drive the outcomes that matter most across diverse applications: strong root establishment, prolific blooms, quality fruit, winter hardiness, and resilient plants. The 4% ammoniacal nitrogen provides steady soil-level feeding while the 1% urea component delivers a quick initial boost — a dual-delivery system that gives plants both immediate and sustained nutrition. This formula is particularly valuable when soil tests show adequate nitrogen but low phosphorus and potassium, or when you want to avoid pushing excessive vegetative growth in flowering and fruiting plants. Old Cobblers Farm™ Wicked Growth 5-10-10 Multi-Use is the single-product solution for gardeners who want P-K emphasis without the hassle of multiple specialty fertilizers.
When To Apply ?
For garden beds, broadcast 2-3 lbs per 100 sq ft and incorporate into the top 4-6 inches of soil before planting. For established plantings, side-dress by applying fertilizer in a band 4-6 inches from stems or along row edges, then water in thoroughly. For trees and shrubs, scatter evenly from 1 foot from the trunk out to the drip line. For containers, mix 1 teaspoon per gallon of potting soil at planting time. For bulbs, mix into the soil at the bottom of each planting hole or trench to place phosphorus directly in the root zone. The lower nitrogen content makes this formula forgiving — less risk of burn or excessive vegetative growth compared to balanced or high-nitrogen blends. Avoid applying directly to foliage or stems.
How to Apply ?
1.
Soil Test
Test soil to confirm P and K levels need supplementing. This low-nitrogen formula is ideal for root crops and flowering plants.
2.
Calculate Rate
Calculate coverage based on your area and application rate for the specific crop.
3.
Broadcast / Side-Dress
Broadcast evenly over the planting area or side-dress along rows for targeted feeding during the season.
4.
Incorporate
Work lightly into the top 2–3 inches of soil if applying before planting to place nutrients near developing roots.
5.
Water In
Water thoroughly after application to activate nutrients and prevent granule burn.
6.
Reapply
Reapply every 4–6 weeks during the growing season for sustained nutrition.
7
Broadcast / Side-Dress
Broadcast evenly over the planting area or side-dress along rows for targeted feeding during the season.
How To Store
Store in a cool, dry location away from moisture. Keep bag sealed between uses. Avoid contact with eyes and skin — wash hands after handling. Keep out of reach of children and pets. Keep away from water sources to prevent nutrient runoff.
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.