To be more specific and answer your question, after LAST frost I would put the pot outside. You are in zone 6 right? Keep in a sunny location, water well and after 1st frost follow previous advice. Here's what I include with bulbs I've given away or donated plant sales: Zantedeschia albomaculata: Calla Lily Form: Tender bulb. Exposure: Full Sun. Height: 24" (to 30" bloom). Spread: 18-24". Zone: 8-10. Flower Date: June-July. >Planting Reqs: Plant 4-8" deep and 18-24" apart when all danger of frost has passed (last week of May in ELong.). I plant those in back 4" deep and those in front 6-8" then cover all with 2" of compost/mulch. Fertilize using a 5-10-10 or 5-10-5 fertilizer. >Lifting Reqs: Lift the rhizomes after first frost, cut back stems, clean off excess soil, let dry out of the direct sun for a few days and then store in a dry location that remains between 50 and 60 degrees F. They can be divided before storage as long as the cut portions are allowed to dry. Doing so will prevent the open wounds from rotting. I use perlite in a PAPER bag. Check in late January. If rot is evident cut, scrape and clean off all rot. Coat cut surface liberally with powdered anti-fungal or cinnamon pushed firmly into flesh. Let dry and store. >Soil Reqs: Slightly acidic (6-6.5) well drained, humus enriched sandy loam. Adding mulch to the soil will help maintain a constant soil temperature. This will help keep the plant stress-free. Mulch will also improve the texture of the soil and help hold in valuable moisture. Calla lilies thrive in well-drained, loose soil. >Pruning: Remove spent flower stems to tidy up your plants and strengthen leaves and corm. >Note: Watch out for Japanese Beetles. Hope this helps. Evan

Hi Poaky1, What type of callas are you talking about? I'm assuming you are referring to the white ones, which are called zantedeschia aethiopica - quite a mouthful! I grow mine in pots, then just bring the entire pot into the house after first frost and leave them in the dirt all the time, through winter, spring, summer and fall, never removing them. After I bring them outdoors in May, they bloom just fine if I give the pot enough sun. I've also read that they need high phosphorus to bloom well, so maybe you should try some phosphorus on your plants. I'm jealous that you've had yours overwintering in the garden. Mine in the pots have produced quite a few babies so I will break apart the soil this year in the pot and separate a baby from his mom and try to plant in the garden, very very deep as I am in Zone 5.

I just bought some from Lowes, too. Bright yellow! Not as good a deal as yours but worth it if they come back. I don't know if I just got lucky, but I brought the pot that was growing on my deck into the basement for the winter. It stays in the 50s with maybe a lower drop if it's really cold outside, into the mid-40s. They were among the pots with cannas that also came back. As soon as it started getting warmer the CL poked up. We'll see how long it takes them to flower again. Of course, the ones I just bought are putting on their show right now having come from a greenhouse.

if you have many.. just try it .. give it a week or so ... see what happens are they currently blooming ... where are you.. any chance at a pic .. so we can get a flavor of the situation?? ken