Espoma
6 verified products
Browse on Amazon →Last verified: April 2026
Read our full verification: Is Espoma Made in USA?Est. 1929
Espoma has been manufacturing products in Millville, NJ since 1929. We carry 6 verified American-made Espoma products.
New Jersey's Organic Fertilizer Pioneer
Espoma was founded in 1929 in Millville, New Jersey, at a time when the American fertilizer industry was transitioning from natural organic materials to synthetic chemical inputs. While the broader industry moved toward higher-analysis synthetic nitrogen, Espoma maintained its commitment to natural organic ingredients — a commitment that would prove prescient as environmental awareness grew in the late twentieth century and organic gardening moved from fringe practice to mainstream preference.
Millville has remained Espoma's home through nine decades of product development. The New Jersey facility blends fertilizer from natural ingredients including feather meal, poultry manure, greensand, and bone meal, then incorporates the Bio-tone beneficial microbe package that distinguishes Espoma products from simple organic material blends.
The Bio-tone Innovation
Espoma's Bio-tone beneficial microorganism package is the company's most significant technical contribution to organic gardening. Bio-tone contains both endo and ecto mycorrhizal fungi — root colonizing organisms that extend the plant's effective root zone by forming symbiotic relationships with root cells. Mycorrhizal networks can extend the root's water and nutrient absorption capacity by an order of magnitude, establishing plants faster and improving drought tolerance in established plants.
The practical result is that Espoma fertilizers do more than supply nutrition: they establish soil biology that improves long-term plant health and reduces future nutrient requirements. Synthetic fertilizers feed plants directly but do not build soil biology; Espoma's Bio-tone approach builds the soil ecosystem that makes plant nutrition more efficient over time.
Specialty Formulas for Specific Plants
Espoma's specialized fertilizer line addresses a gap in general-purpose organic products: different plants have meaningfully different nutrition requirements. Holly-tone uses a low-pH formula appropriate for acid-loving plants — azaleas, rhododendrons, blueberries, hollies — that require soil conditions different from general garden plants. Rose-tone includes the magnesium and trace minerals that heavy-blooming roses deplete rapidly. Bulb-tone provides the phosphorus-weighted nutrition that bulb crops need for root development and energy storage.
For gardeners who want to feed specific plants correctly rather than applying a general-purpose product to everything, Espoma's specialty line provides the nutritional precision of synthetic fertilizers with organic ingredients. The Millville manufacturing and 95-year organic commitment provide assurance that the product formulas reflect genuine organic material science rather than marketing terminology.
Espoma Organic Holly-tone Fertilizer 4-3-4 Formula 18-Pound
Espoma
Garden & Patio
Espoma Organic Garden-tone Herb and Vegetable Fertilizer 18-Pound
Espoma
Garden & Patio
Espoma Organic Rose-tone 4-3-2 Rose Food 18-Pound
Espoma
Garden & Patio
Espoma Organic Bio-tone Starter Plus All-Purpose Fertilizer 4-Pound
Espoma
Garden & Patio
Frequently Asked Questions
Is Espoma made in the USA?
Yes. Espoma manufactures 6 verified products in Millville, NJ. Espoma has manufactured organic fertilizers in Millville, New Jersey since 1929, pioneering the Bio-tone beneficial microbe fertilizer system and becoming the leading organic plant food brand for American gardeners who want to feed their plants without synthetic chemicals.
Where is Espoma manufactured?
Espoma is headquartered in Millville, NJ. Manufacturing takes place in Millville, NJ.
What Espoma products can I buy?
We carry 6 verified Espoma products across Garden & Patio. Every listing links directly to Amazon with verified American manufacturing.
When was Espoma founded?
Espoma was founded in 1929. Espoma has manufactured organic fertilizers in Millville, New Jersey since 1929, pioneering the Bio-tone beneficial microbe fertilizer system and becoming the leading organic plant food brand for American gardeners who want to feed their plants without synthetic chemicals.