Also known as polymer gel, garden gel, garden crystals. This water-absorbing polymer works well in container gardens because they decrease the need to water and keep plants from drying out. WaterSmart Crystals are not liquid but rather reservoirs of moisture in gel form.
Mix the crystals into your potting soil when planting and then water the plants. The crystals will absorb approx. 400 times their density in de-ionized water and in the 150-350 range in more salty soils.
The moisture is then slowly released as the soil dries out and the need to water will be reduced by 50%-70%. If you are watering with an added liquid fertilizer, this will be released along with the water. The crystals last at least 5 years and longer if kept out of the sunlight. Available for $12.99 plus shipping.
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Posted by Mary Ellen at July 31, 2008 8:35 AM