Originally Posted by emmylou
Do you find that the grass yellows and dies quickly? I'm having to buy a new pot of it every month. I figured that I overwatered the first two... but I'm watering the third only when the soil is dry and it yellowed after a day. This would be in full sun. It's really odd, since I'm good with plants and a range of them are growing well in the same window. I even bought a different type of cat grass from a different store... same results.
What I've found through experience is that wheat grass can last almost up to a month if you keep it in the refrigerator for several hours each day. The grass does NOT need to be kept in the full sun, but the dirt does need to be kept moist. I don't know why refrigerating it works so well, but it does. This particular kind of grass seems to prefer less light, and thrives in the cold darkness of the fridge.
Currently, I keep the little square pot of grass on the floor near Ginger's food dish. It usually winds up lying on its side, and she munches to her hearts content. I just rotate the container so she doesn't eat it all just from one side.
I've had pretty good luck with the cat grass that I buy that is already grown - it seems to last longer than the pots of it that I grow myself. I buy two, and one is in the fridge while the other is out.
I also keep it trimmed so that it continues to grow - I "mow" the pots of grass by trimming the tops down an inch or so. This seems to also help it to last longer before going yellow.
Also, it isn't like a lawn - you can't expect that it will continue to last indefinitely. The grass is quite root heavy, and quickly uses up the nutrients in the soil within the small pot. Buying or growing one fresh pot of grass a month is completely normal. The best you can do is take care of it to keep it alive and viable as long as possible. Then buy or grow another, and understand that grass is also a living thing that has a cycle.