E.B. Stone Organics Ultra Bloom Plant Food, 4 lbs, 0-10-10 Formula

E.B. Stone Organics Ultra Bloom Plant Food is an organic fertilizer formulated specifically to promote flower and fruit production. Designed with a 0-10-10 nutrient analysis, this plant food provides concentrated phosphorus and potassium while omitting nitrogen entirely, making it useful for gardeners who want to stimulate blossoming rather than leafy vegetative growth.

This organic bloom booster is designed for flowering shrubs, specifically aiding plants such as azaleas, camellias, and rhododendrons in producing bright, colorful flowers. Because it is also formulated as a fruit fertilizer, it helps support crops and ornamentals through their flowering and fruiting cycles.

A key consideration is the complete absence of nitrogen. If your plants require foliage feeding or soil nitrogen replenishment, you will need a separate fertilizer source, as this 4-pound bag only supplies phosphorus and potassium nutrients.

Verdict: E.B. Stone Organics Ultra Bloom Plant Food is an excellent choice for gardeners focusing on flowering shrubs like rhododendrons and azaleas or fruiting plants. If you want a specialized 0-10-10 organic formula that skips nitrogen to target blooms, this four-pound bag delivers exactly that.

A great fit if you:

• Grow flowering shrubs such as azaleas, camellias, or rhododendrons
• Need an organic fertilizer tailored for blooming and fruit production
• Want a zero-nitrogen formula to avoid excess leaf growth

Consider something else if you:

• Need a fertilizer that provides nitrogen for leafy vegetative growth
• Require a package size larger than 4 pounds

What is the N-P-K ratio of this plant food?
It features a 0-10-10 formula, meaning it supplies phosphorus and potassium with no nitrogen.

Which plants is this fertilizer formulated for?
It is formulated for flower and fruit plants, including azaleas, camellias, and rhododendrons.

Is this an organic product?
Yes, it is an organic bloom booster from EB Stone Organics.