Product information

Ultra Prebiotic Fertilizer

$84.95
Pay in 4 interest-free installments of $21.24.

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Free shipping to contiguous USA.*

Agrigro Ultra® works in harmony with nature to boost plant growth and overall plant health while energizing the soil ecosystem to increase nutrient uptake, improve soil structure, build humus, and speed up the breakdown of organic matter for improved soil and plant health.

Ultra® is environmentally safe, containing no synthetic chemicals to contaminate the soil, water or air.

Caution – Do NOT apply to the foliage of African Violets

Product Video

Why Prebiotics?

Prebiotics in your Market Garden

As Market Gardener’s we need every advantage possible to maximize yield potential. Oftentimes we are trying to push the limits of normal growing seasons. The early tomatoes at market, greens in the summer, and rare varieties all demand higher prices. So we go for it!

In order to accomplish this we use tools to help develop unique microclimates. Shade cloth, frost cloth, insect netting, high tunnels, caterpillar tunnels and all other common market tools are all designed to reduce stress on your plants and enable them to grow in the midst of stressful conditions. AgriGro’s Prebiotic technology helps reduce stress and build resilience to challenging growing conditions.

When we boost the microbiology within our soils, our plants respond better to these times of stress.

How to use

Watering, Transplant, or Drench Solution

Mix 1 oz. of concentrate in one gallon of water. Use 4 oz. (1/2 cup) of diluted solution per plant every 30 days. For best results, dip seed in this solution or let bulbs and bare roots soak in this solution one hour prior to planting.

5 out of 5 stars

“It really helps transplants recover faster after transplant and helps plants grow faster in the propagation house. Also helps release soil P faster from hard to release sources. I have seen plants in the field turning purple and inject this product it turns the color around compared to when not applied. You need to have the element there first but if you do it will help release it.”

Alan Seiler
Better Together Farm

How to use

Foliage Spray (Flowers, Fruits, Vegetables, Shrubs, Houseplants)

Mix 1-2 oz. concentrate in one gallon of water and mist evenly onto plant foliage every 7 days. Note: Spray early in morning or late evening, not in direct sunlight when temperatures exceed 85 degrees F. DO NOT apply Ultra® to the foliage of African Violet plants.

How to use

Lawns

Apply 1 oz. per 1,000 sq. ft. of lawn every 30-45 days throughout the entire growing season. Water in well. (Hose end sprayers, irrigation fertilizer injectors, or standard hand sprayers work great for even application.)

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Product Reviews

5.0 / 5.0

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Recent reviews

Ultra

5 out of 5 stars

Robert F.26 days agoVerified buyer

Really good so far and AWESOME customer service. Will buy from again!

Ultra Prebiotic Fertilizer

5 out of 5 stars

Skyler L.3 months agoVerified buyer

A great addition to our farm nutrition!

5 out of 5 stars

Sam M.4 months agoVerified buyer

Since we started using Ultra we have seen stronger healthier crops growing.

Great product

5 out of 5 stars

Alan S.6 months agoVerified buyer

It really helps transplants recover faster after transplant and helps plants grow faster in the propagation house. Also helps release soil P faster from hard to release sources. I have seen plants in the field turning purple and inject this product it turns the color around compared to when not applied. You need to have the element there first but if you do it will help release it.

1 person found this helpful

Seems to reduce plant stress

5 out of 5 stars

Anonymous8 months ago

I try and apply Ultra before heat waves all through the summer and I can noticeably tell a difference in my lettuce.

3 people found this helpful
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