Sungrower® Black and White Grow Bag (1 Gallon), 100 Count Heavy Duty Provides added water retention in

Provides added water retention in both the mix and on top of the trays

or poorly draining soils

and reliability

That being said

Sungrower® Black and White Grow Bag (1 Gallon), 100 Count Heavy Duty Provides added water retention inBlack on the inside and white on the outside, these Grow Bags feature UV stabilization and plenty of drainage holes while also creating a light proof barrier to stop algae growth. Product Features List Provides 92% reflectivity for a cooler root zone Easy to set up so you can grow where you want Great even in hot climates Ultra light and simple to store Perfect for first time gardeners or large scale container growers Sungrower Grow Bags make it