Nursery
Seedbed
noun
A bed just for seedlings is called a nursery. It's where all the little seedling grow before they're sold or replanted outside.
The readings for this word are both kun'yomi readings. You've learned both of these readings by now so you should be able to read this on your own.
今日は夫と苗床を作りました。
I made a nursery with my husband today.