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  • Water Conservation Drought Tolerance
  • Garden Amendments Soilmoist TerraSorb
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Water-Keep Garden Crystals - 50 lbs

Water-Keep Garden Crystals - Super Absorbent Soil Amendment

Water-Keep Crystals are an environmentally safe, super absorbent polymer developed specifically for slow-release plant watering. Absorbing up to 400 times their volume in water, these polyacrylamide hydrogel granules release the captured water back to plant roots as needed. Helps reduce soil loss and improves water infiltration. Extends time between watering, reducing time and labor expense. Especially helpful for drought susceptible conditions, including recent transplants of trees and shrubs, hanging baskets and container gardening. Dry granules take up minimal space and store indefinitely. 40 times more water retentive than peat moss. An invaluable product for any busy gardener living in areas prone to drought, heat waves or dry spells. Medium size is ideal for gardening. Bulk pricing for affordability – only $4 per lb

0.2 to 0.8 mm - SMALL CRYSTALS
0.8 to 2.0 mm - MEDIUM CRYSTALS
2.0 to 4.0 mm - LARGE CRYSTALS

Make sure to select a size; if you forget, the default size we ship is medium.

RRP: $250.00 (You save $35.00)
Your Price:
In Stock
Minimum Purchase:
1 unit(s)

Features & Benefits

  • Granules capture excess water, locks it into the soil, then releases it slowly as needed by plants
  • Significantly reduces soil water depletion while dramatically improving plant health
  • Reduces plant watering frequency by up to 50% - thus saving water, time and labor
  • Odorless soil conditioner that significantly reduces soil loss, aerates soil and improves infiltration
  • Helps protect aquatic ecosystems by reducing water soluble fertilizer and nutrient leaching
  • Get deeper root penetration with better access to water-soluble nutrients and fertilizers
  • Increases germination rate and improves transplantation survival rates
  • Easy to store, non-toxic, dry granules are easy to blend into DIY soil mixes
  • 100% degradable over time into carbon dioxide, water and small amounts of ammonia
  • Longer life, higher gel strength and better performance than sodium based polyacrylate
  • Becomes gel-like and slippery soft with the addition of water
  • Remains effective for 5-7 years – providing ample time for plants to establish a strong root system

Please Note: Use caution in spill areas; after contact with water, granules will produce an extremely slippery condition. Contains up to 50 ppm acrylamide – do not ingest and avoid inhaling dust particles when handling.

Product Specs

Size Dimensions

Granule size = 0.8 – 2.0 millimeters


Expands by absorb 400 times its volume in rainwater

1 lb provides 8 gallons of water reservoir


50 lb bag of dry granules


Polyacrylamide / Potassium Acrylate Copolymer, cross-linked


1 bag of granular material




100% water capacity is reached within 2 hours


Reduces soil erosion / loss

Captures excess water for slow release to plant roots

Saves water by lowering frequency of plant watering

Key Features

Dry granular form is easy to store, transport and apply

Effective for 5-7 years – easy to blend into soil mixes

Great for container gardening and hanging baskets


Made in North Carolina


1 year

Shipping Details

# of Parcels

1 box – 52 lbs

Method of Transit

Ground service

Product Location

North Carolina

Time before shipping

1-2 days

Time in Transit

1-2 weeks

Dimensional Weight


S&H Fees

$33 (rate applies to the lower 48 states only)

Call for rates to AK, HI, PR



Write your own product review

  1. Good Product 4 Star Review

    Posted by on 1st Oct 2015

    I had a good surprise about the crystals.

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