We have cotton seedlings for sale on our site  https://cottonman.com/live-cotton-plants/

Seedlings are shipped from mid April to mid June yearly

If purchased you will receive zip loc bags (unsealed) with cotton seedlings inside. Remove seedlings immediately. Transplant seedlings into warm moist soil. cups, planters, pots, garden. Keep them moist not wet, full sun.  Warm southern window if indoors. Do not place outside until the treat of frost has past for your area. FROST WILL KILL!! The cotton should reestablish in 10 days.  Once established weekly fertilization will produce large plants.