How Long Do Daylilies Last?. Do planted calla lilies only bloom only once per season, or do they keep blooming? Otherwise, your calla lily is unlikely to bloom at all. as long as you properly take care of them. My name is Lisa, and I’m on a mission to expand my plant knowledge. If you think that the calla lilies are not blooming properly, you might want to take a look at the amount of sunlight that the plant is receiving. Hydrated flowers will last much longer than ones that are cut when they are dehydrated. The typical calla lily bloom time is in the summer and fall, but for many calla lily owners this time may come and go without a sign of buds or flowers from their calla lily plant. We brought a suitcase full of them to Oregon 30 years ago; the same plants are in full bloom right now, but in a few weeks of warm weather they will be gone until next spring. When Calla Lilies are planted in the spring, they will produce flowers between midsummer and early fall for 3-8 weeks. Mine last for 2 - 3 weeks in the garden (NY). By using our site, you agree to our. Propagation: If the Calla Lily is fertilized, small black berries will form. To create this article, 9 people, some anonymous, worked to edit and improve it over time. Honestly, a bouquet of just calla lilies looks really great all on its own. Small classes professors passionate about teaching hands on experiencein the field and around the world. More importantly, you have to deadhead the plant to extend the blooming period. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/e\/e0\/Keep-Cut-Calla-Lilies-Fresh-Step-1-Version-4.jpg\/v4-460px-Keep-Cut-Calla-Lilies-Fresh-Step-1-Version-4.jpg","bigUrl":"\/images\/thumb\/e\/e0\/Keep-Cut-Calla-Lilies-Fresh-Step-1-Version-4.jpg\/aid4900093-v4-728px-Keep-Cut-Calla-Lilies-Fresh-Step-1-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"