Master Nursery Bumper Crop Organic Soil Builder
Best organic soil amendment for home gardeners seeking healthier plant roots.
Enhance your garden with Master Nursery Bumper Crop Organic Soil Builder, a biologically diverse and sustainable soil amendment. This OMRI Listed product reduces peat moss content and is enriched with beneficial mycorrhizal fungi to promote robust root development. Its balanced blend of natural ingredients, including aged wood fiber, compost, and worm castings, provides essential nutrients for a variety of plants. Ideal for raised beds, vegetable gardens, flower beds, and lawns, it helps create a thriving environment for your plants with a target pH of 6.5.
$11.99
Owner Satisfaction
4.7
/ 5
Category Rank
6
/ 187
#6 in Compost
Price vs Category Average
-51%
Below average
SKU
169015
Who it's for
- Versatile growers needing one solution for beds and containers
- Organic gardeners seeking high-quality, nutrient-dense plant nutrition
- Homeowners struggling with difficult clay or sandy soil textures
Who should skip it
- Budget-conscious gardeners looking for inexpensive soil amendments
- Beginners expecting a standalone potting medium for direct planting
- Gardeners with physical limitations handling heavy, dense bags
Performance breakdown
Biological Diversity
Mycorrhizal inoculation creates a robust foundation for long-term soil health.
Nutrient Density
Premium additives like lobster meal and worm castings provide superior nourishment.
Sustainability Profile
Peat-free composition makes this an environmentally responsible choice for conscious gardeners.
Application Versatility
Performs consistently across raised beds, vegetable patches, and ornamental flower gardens.
Root Development Support
Specialized fungal blend actively encourages faster and stronger root system establishment.
pH Stability
Targeted 6.5 pH level ensures optimal nutrient uptake for most plants.
Key Specs
SKU
169015
UPC
00609853100020
Target pH
6.5
Ingredients
Aged wood fiber, compost, aged bark, lobster meal, worm castings, kelp, dehydrated poultry manure
Inoculated with endo- and ectomycorrhizal fungi
Available in 1 cu ft and 2 cu ft sizes
Soil Type
Compost, Garden Soil
Primary Amendments
Compost, Worm Castings, Mycorrhizae
Features
- OMRI Listed for organic gardening
- Boosts root health with mycorrhizae
- Sustainable, reduced peat moss content
- Provides essential plant nutrients
- Versatile for gardens and lawns
- Biologically diverse soil builder
- Balanced blend of natural ingredients
What customers say
Customers consistently praise Bumper Crop for its exceptional quality and noticeable impact on plant health. Reviewers frequently highlight the rich, dark texture and the ease with which it integrates into existing garden beds. The consensus is that this soil builder delivers superior results, leading to vigorous growth and abundant yields, making it a highly effective amendment. While the price point is higher than competitors, gardeners feel the dramatic improvement in soil structure and plant vitality justifies the investment, confirming its premium status in the organic gardening community.
Know before you buy
Yes, it is OMRI Listed for organic gardening, meaning it meets strict standards for use in organic food production. It contains natural ingredients like compost, worm castings, and kelp to nourish your vegetables.
Mycorrhizal fungi form a symbiotic relationship with plant roots, effectively extending their reach to absorb more water and nutrients. This results in stronger, more resilient root systems and healthier overall plant growth.
Bumper Crop is designed as a soil builder or amendment rather than a complete potting medium. For best results, mix it with your existing garden soil or use it to enrich raised beds and containers.
This product has a target pH of 6.5, which is considered the 'sweet spot' for most garden plants. This neutral-to-slightly-acidic range allows for optimal nutrient uptake.
No, this is a peat-free soil amendment. It uses aged wood fiber and bark as a sustainable alternative to reduce environmental impact.
For garden beds, mix 1 to 2 inches of the soil builder into the top 6 inches of your native soil. For lawns, you can use it as a top-dressing to improve soil structure and introduce beneficial biology.
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