Unlike other seeds, citrus seeds need to stay moist. You can either root cuttings ( softwood or hardwood ) or use layering (a method of making one plant produce lots of shoots, which root and can be severed to create new plants). Growing Citrus by Seed. While you can grow a tree from seed and possibly have some success, especially with lemons, you’ll find that to get a great piece of citrus fruit you’ll need to graft that tree, at some point. I have planted seeds from lemons, oranges, tangelos, grapefruit, tangerines and limes. The lemon root makes for a good root stock, though there are many that will work, some are more cold-hardy, disease resistant, etc. Place the bag in the refrigerator. 11 years ago. If they dry out, it is very likely they will not germinate. ne_fl. I have a beautiful large orange tree seedling, a grapefruit tree seedling, a lime tree seedling and several lemon tree seedlings. Vegetatively propagated rootstocks are much more uniform than those grown from seed, although you have to make an investment of space and time to grow your own. The only legal way to propagate citrus in Florida, these days, is in properly inspected greenhouses with psyllid-proof screening, positive-pressure entry air locks, an anti-bacterial spray on entering and leaving, and a … Citrus seed storage in the fridge will last for several days to several months. Growing Rootstock from Seeds? Well, you can plant seeds from any citrus fruits you buy at the grocery store.