I received a pot of calla lilies last year. In the fall, I took the rhizomes out and stored them in vermiculite or something like that in a container over the winter. In March, I took them out and planted them in pots. They are now about 2' tall, but I see no blooms yet. Am I just too early, or what is the problem?
It is still a little early, but sometimes they can be tricky to get to rebloom. This article will help: https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/make-calla-lily-bloom.htm
I purchased plastic 10-inch pots for my calla lily plants, already bloomed and flowering. The pots do not have holes, so I need to drill them. I'll be placing rocks in the bottom of the pot as I understand that callas prefer well drained soil (correct?). My question is, how many holes should be drilled in the bottom of the pot?
I would do two or three, to protect against one hole getting plugged up. Yes, callas like well draining soil but like to be watered frequently.
Just this month I purchased 5 calla lilies in the patio pots for my patio. Due to our cold temps, I have been keeping them indoors and only put them out during warm day hours. My problem is 3 out of the 5 now have developed a problem of leaves and flowers tipping over; and when I touch them, they come out as rotten. The bottoms seem to be rotting out and are slowing spreading and dying. In one I poked my finger down in dirt and there was a mass of jelly-like substance. Do they all have something in the dirt from the company that is killing them? What can I do, as they are too expensive to lose.
It may be a soft rot caused by a bacteria (Erwinia carotovora), a major disease of calla lilies. Lack of calcium in the soil makes the plant more suseptible to the disease. Once the disease is present in the plant, it must be destroyed to keep the bacteria from spreading.
As for the care of calla lily, here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/bulbs/calla-lily/growing-calla-lilies-and-care-of-calla-lilies.htm
The original bloom color is cerise; it is a first-year plant in a 4"-5" plastic nursery pot; it has healthy dark green, white-spotted leaves, & is in an east-facing window that receives morning sun & plenty of natural light throughout the day.
Unfortunately, your photos did not come through. I am unable to see the damage. This could be due to there being too much nitrogen in the potting mix, or not enough phosphorus and potassium. Usually, the nitrogen will exceed what the plant is comfortable with.
You can offset with bloom fertilizers that contain phosphorus and potassium. Just keep an eye out for nutrient burns at the leaf tips.
Another thing to consider is that they prefer, consistently, moist soils.
Make sure that you do give this a dormancy, this coming Autumn!
https://www.gardeningknowhow.com/houseplants/hpgen/indoor-calla-lilies.htm