Espoma Organic Bulb-Tone 3-5-3 Fertilizer 4 lb — Natural Organic Bulb Food with Bio-tone & 6% Calcium for Vibrant Blooms

Bulb-Tone is a specially blended organic fertilizer from Espoma designed for bulbs such as tulips, daffodils, crocus, hyacinths, gladioli and lilies. Its 3-5-3 N-P-K analysis, enriched with 6% calcium and Espoma’s proprietary Bio-tone formula, supplies steady nutrition without synthetic fillers or sludge. Use it when planting or as a post-bloom feed to support bulb development and future flowering cycles.

How should I apply Bulb-Tone when planting new bulbs?

Apply Bulb-Tone directly into the planting hole so nutrients are immediately available to the bulb’s roots. No mixing is required; simply place the recommended amount beneath the bulb, cover with soil, and water thoroughly to activate the formula.

• Place fertilizer in the planting hole under the bulb base for direct root access
• Use labeled rate on the bag—ready to use, no dilution
• Water after planting to start nutrient release and soil contact

Can I feed established bulbs with this product, and when?

Yes — Bulb-Tone is appropriate for established bulbs and works well as a post-bloom feed to replenish nutrients used during flowering. Sprinkle the granules on the soil surface around crowns and water in; this supports bulb recovery and nutrient storage for the next season.

• Apply after blooms fade to help bulbs store energy for dormancy
• Broadcast lightly around the base of established plants
• Water after application to move nutrients into the root zone

What makes Bulb-Tone suitable for organic gardening?

Bulb-Tone is formulated from natural and organic ingredients and is certified as an Organic Input Material, meeting organic production standards. It contains no sludges or synthetic fillers and includes Espoma’s Bio-tone biological enhancers to promote beneficial soil life.

• Approved for organic gardening and production
• Contains natural nutrients plus 6% calcium for bulb health
• No synthetic fillers—clean, traceable ingredients

How does the 3-5-3 formula benefit bulbs specifically?

The balanced 3-5-3 ratio provides a slightly higher phosphorus level to encourage strong root development and bloom formation, while nitrogen and potassium support foliage strength and overall plant vigor. The added calcium helps maintain cell integrity and supports healthy bulb structure.

• Phosphorus-rich center (5) for root and flower development
• Nitrogen (3) for steady foliage growth without excessive leafy surge
• Potassium (3) for resilience and overall plant health; 6% calcium for structural support

Who is this for? Espoma Bulb-Tone is aimed at home gardeners, hobbyists, and organic growers who plant or maintain spring and fall-flowering bulbs and want a ready-to-use, natural fertilizer. It suits both first-time bulb planters who prefer a simple application and experienced gardeners seeking certified organic inputs to improve bloom quality and bulb longevity.

Ingredients

organic ingredients