'Hercules' Calla Lily
Please be careful removing your plant from it's packaging.
Getting started -- Your Calla was grown in filtered light, not direct sun, so it should be acclimated to direct sun slowly. To prevent wilting or burning, start your plant with bright, indirect light for the first week, then every few days, move it into more light. Keep in mind that this Calla doesn't need much direct sun.
Soil -- Most ordinary potting soils should work, although it is good to add extra perlite, pumice, or coarse horticultural sand, for extra drainage. Use about 2 parts potting soil to 1 part perlite/pumice/sand. Transplant to a 1 gallon (4 liter) container (approximately), which will hold it for a few months.
Light -- Give it bright light, but not strong sun. This Calla doesn't need as much direct sun as most Callas. It grows fine in bright shade with some filtered sunlight. If you give it more sun, it will require more watering and feeding. Protect it from hot afternoon sun.
Watering -- This Calla likes consistently moist soil when it is not dormant. During warmer or sunnier weather, make sure the soil doesn't dry out. It reportedly can be grown in boggy conditions, but i have not tried this.
Climate -- The Hercules Calla prefers mild temperatures. In warmer climates, shade it during the heat of the day and don't plant it where heat can accumulate, like near a sunny wall. The plant tends to go dormant during the summer, and grows actively the rest of the year. The tubers are winter hardy to Zone 8 (20°F/-6°C) if planted deep. But since the plant prefers to grow throughout winter, it's best to grow it in a pot and bring it indoors before frost strikes.
Repotting -- When the roots reach the bottom of the container, it should be transplanted to a larger container (or into the ground in frost-free areas). Each time you repot, bury it 1-2 inches (3-5 cm) deeper. After several years, it will need a large pot, such as 10 gallons (40 liters) or more. A mature plant with a 6 inch (15 cm) tuber may need 30-40 gallons (100-150 liters).
Winter strategies -- If you bring it indoors over the winter, try to keep some or most of the leaves intact, if possible. Removing the leaves may delay flowering.
Fertilizing -- The larger your plant is, the more food it will need. Most all-purpose fertilizers should work, following the dosage on the package. Cut back on the feedings if your plant goes through a dormant period, and increase the feedings when growth is quick. It's normal for an older leaf to occasionally turn yellow and die throughout the year, but if it seems excessive, it could need more nitrogen fertilizer, or more water.
Bugs to watch for -- Spider mites (tiny "dots" under the leaves), Aphids (green ones are hard to see), snails/slugs.
If any questions or problems come up, feel free to email me.
Have fun growing it!
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