Q.Started pampas grass from seed not expecting it to take off and it did. Now I have many !!! They\’re about 3 inches high. Well i
t ‘s September in Cleveland and I would like to know if I should plant them outside now or put in pots and bring inside until Spring ?!
Plant the grass outside now. It isn't too late. Going through winter dormancy triggers new growth in the spring. If your plants are just an inch or two high, cover them with leaves or straw after they have turned from green to tan. If you have a garage around 40F, leaving them in there in their pots is also fine. Remember to lightly water the pots on Christmas, Valentine's Day and the first day of spring. If the soil dries completely, the roots will die.