I buy the Cat Grass on Sale now at zooplus: Cat Grass Multipack 3 x 100 g and plant a handful per week. It takes a week to be in 'optimum eating height' so I always have fresh grass.

I've noticed that planting them in soil on a vase or just with water in a glass bowl doesn't make a difference on how long it would last. But planting in soil in a vase will prevent the cat of making a mess pulling the seeds out. They might just do like Ari and carry the whole vase around the house.

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I never mastered cat grass. By the time it was tall enough for Declan to consider eating some, it was keeling over, turning yellow and dying and i never remembered to sow more in time.

Then i discovered the joy of spider plants and have never looked back! Easy to grow, easy to propagate, look nice, very forgiving if a bit neglected and best of all Declan loves them. And they don't seem to make him as sick as the cat grass did.