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Ultra Bloom 0-10-10 (4 lb box) - F300

Ultra Bloom 0-10-10 (4 lb box)
Winter Garden Tips

Winter Garden Tips

Organic Fertilizer & Fertigation

Organic Fertilizer & Fertigation

  • In stock. Ships from our warehouse in Northern California.
Buy big, save big with quantity discounts
  • Buy 10 for $7.19 each and save 11%

Aids in the Development of Flowers and Fruit Buds

Ultra Bloom is formulated without nitrogen to aid in the development of flower and fruit buds. Although it may be used on all plants throughout the year, it is especially recommended for Azaleas, Camellias and Rhodenderons when flower buds begin to form in late summer, fall, and winter.

  • Blended with humic acid and beneficial soil microbes including mycorrhizae.
  • Derived from bone meal and potassium sulfate, analysis 0-10-10
  • Application Rates:
    • Azalea, Camellias, Rhododendrons (To help in flower development) -- 1 Tbs per foot of height or width of plant. Apply each month from bud formation through flowering period.
    • Fruit & Citrus Trees (To help in flower bud development and fruit sweetness) -- Apply 3 Tbs per each foot of tree height. Apply on a monthly basis.
    • General Applications (To improve flowering and root development) -- For large areas apply 2 lbs per square ft. For individual plants apply 2 Tbs per each foot of plant height or width.
  • Scatter over the soil surface, work into soil (except for Azalea, Camellias, Rhododendrons to avoid root damage), and water thoroughly.

Important Information for Certified Organic Growers

We do our best to update our product's organic status, however the status of any product can change at anytime without notice from the manufacturer. Please confirm that the product is allowed by your certifying agency and that it's still on CDFA's organic input material list at

Customer Reviews

Great on My Garlic

I used this on my garlic and got nice big bulbs in the bed I used it on. Great for bulbs and plants that don't need to much vegetative growth.

Review by (on )
Ultra Bloom

This is a great fertilizer for acid loving plants. The very aggressive deer in my neighborhood did a lot of damage to my Camellia plants when they were in full bloom. They were in bad shape! I gave them regular doses of this fertilizer and they have fared quite well.

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April 7, 2015 - Meredith Cherry
Cultures have given meaning to herbs, flowers, and other plants since ancient times.  These symbolic meanings became particularly well developed and socially important during the Victorian era. … read more »