The crystals go in the ground near the root systems that need water, and then water is added to the crystals, which absorb, soften into a gel and then swell up with a 
(The crystals; go; L:in the ground; near the root systems) (the root systems; need; water) (water; is added; to the crystals; T:then) (the crystals; absorb; soften into a gel and then swell up with a)
The crystals the root systems water the crystals
go need is added absorb
L:in the ground near the root systems
water
to the crystals T:then
soften into a gel and then swell up with a