Caladiums can be bought as potted plants or as tubers that are dormant. Their size varies according to the variety. Each tuber, for the most part, has a huge bud that is often flanked by smaller ones. Many gardeners find it beneficial to take off the giant bud with a knife after planting caladium bulbs to make it simpler for these smaller buds to sprout. Of course, this is a personal choice that will have no effect on the general growth of your caladiums.
Caladium bulbs require little effort to plant. They can be planted immediately in the garden in the spring or seeded four to six weeks ahead of the usual frost date inside. Planting tubers too early outside will cause them to rot, so soil temperature is crucial.
These plants prefer moist, well-drained soil and prefer to be partially shaded. Caladiums should be planted 4 to 6 inches (10 to 15 cm) deep and 4 to 6 inches (10 to 15 cm) apart when planted.
If you’re growing caladiums indoors, keep them warm and bright until the weather warms up enough to move them outside. The knobs, or eye buds, of caladium tubers should face up and be planted one to two inches (2.5 to 5 cm) deep. While certain kinds may be difficult to recognize, those that are planted upside down will nonetheless develop, albeit at a slower rate.
Should I soak caladium bulbs before planting?
It’s critical to keep the soil warm and moist. Wait until the soil temperature rises around the first part of June before planting caladium bulbs immediately outside. Soak the bulb for about an hour in warm water before planting it bumpy side up, 2 inches deep in the garden.
How late can you plant caladium bulbs?
- After all threat of frost has gone and daytime temperatures remain over 70 degrees, plant caladium bulbs outside. Caladiums are tropical plants that cannot withstand frost and emerge only when the soil temperature is warm.
- Turn the soil under to a depth of 8 inches to prepare the bed. Remove any clumps of grass or stones using a rake.
- Most plants thrive in soils that have been treated with organic materials. Compost is a beautiful form of organic matter that can be added to your planting area at any time and has a nice mix of nutrients and a perfect pH level. If compost isn’t available, top dress the soil with 1-2 inches of organic mulch after planting, which will start to decompose into compost. A soil test after the growth season will reveal what soil amendments are required for the next season.
- Bulbs should be spaced 8-12 inches apart. Because these are the growth points, the knobby side should be facing up.
- Before all risk of frost has passed, caladium bulbs can be started inside 6-8 weeks. Because they need warm soil to emerge, consider using a heat mat.
How to Grow
- During the caladium growing season, keep weeds at bay. Weeds compete with plants for water, space, and nutrients, so keep them under control by cultivating them regularly or using a mulch to keep their seeds from developing.
- Mulches also aid in the retention of soil moisture and the maintenance of consistent soil temperatures. For annuals, an organic mulch of crushed leaves gives the bed a natural aspect while also improving the soil as it decomposes. Mulches should never be placed on a plant’s stems to avoid decay.
- During the growing season, keep elephant ear plants well-watered, especially during dry spells. During the growing season, plants require roughly 1 inch of rain every week. To see if you need to add water, use a rain gauge. Watering with a drip or trickle system that provides water at a low pressure at the soil level is ideal. To avoid disease concerns, water early in the day using overhead sprinklers so the foliage has time to dry before nighttime. Maintain a moist but not saturated soil.
- A mild fertilizer can be administered after new growth appears. To avoid burn harm, keep granular fertilizers away from the plant crown and foliage. Slow-release fertilizers should be applied at modest rates, as greater rates may induce root rot. A granular fertilizer applied every 2-3 weeks is beneficial to caladiums.
- Pests and illnesses should be kept an eye on caladiums. For pest management recommendations in your area, contact your local Cooperative Extension Service.
- To retain the plant’s strength, many gardeners cut any flower stalks that grow.
- Caladiums are only hardy to zone 10 in the United States. Dig up the bulbs with the soil and tops adhering to them in other spots in the fall before frost or when the foliage begins to die back. Allow bulbs to dry indoors, away from direct sunlight and with plenty of air movement. When the leaves are readily pulled away from the bulb, shake off the soil but do not wash them. Dry peat moss, perlite, or vermiculite can be used to store bulbs. Avoid storing the bulbs below 60 degrees Fahrenheit.
When can I plant caladiums outside?
Caladiums are tropical plants that come in a wide range of colors and patterns. They are native to the Amazon River’s banks in South America. Caladiums look great in pots, hanging baskets, and landscape mass plantings. Red, pink, and white are the primary hues, and each variety of Caladium has its own distinct and interesting color combination of two or more of these colors.
Where to plant caladiums
Caladiums grow well outside in the summer and offer a luxuriant, exotic accent to your yard or garden. The majority of Caladiums prefer to grow in the shadow or partial shade, however certain kinds are more sun resistant (see the caladium catalog page) and can be planted in places with little shade. They’re a terrific way to brighten up shady spots. They’re frequently utilized as border plants, along the sides of houses, or in flowerbeds. They make beautiful patio container plants and can also be utilized in window boxes.
When to Plant Caladium Bulbs
Caladiums are tropical tubers that need to be kept warm to thrive. It is crucial to wait until your soil temperature reaches or exceeds 70 degrees Fahrenheit before planting your caladiums. Germination will be greatly delayed if the weather is cool. On the map on the left, you can see the recommended planting date for your area.
How long does it take a caladium bulb to sprout?
As houseplants, they thrive both outside and inside. Caladium bulbs can take anywhere from two to twelve weeks to germinate, depending on the variety you choose. They thrive in hot temperatures, therefore the warmer the ground and air temperature when you plant them, the faster they will grow.
How cold can caladiums tolerate?
Caladiums can only thrive in warm weather and will die soon if temperatures dip below freezing. Caladiums should only be planted outside after all danger of frost has gone and the soil temperature has reached 70 degrees Fahrenheit. Caladiums can survive temperatures below 70 degrees Fahrenheit, but they will not grow as well or as large. They can withstand temperatures as low as 45 degrees Fahrenheit, but they thrive when the average daytime temperature is above 70 degrees Fahrenheit and the average nightly temperature is above 60 degrees Fahrenheit.
What is the lifespan of a caladium?
They are, however, notorious for being slow-growing plants. What is the life expectancy of caladium? The plants are perennials, meaning they can be used year after year. They are visible for about six months of the year, from sprouting to hibernation.
What month do caladiums come back?
The more “eyes,” or growth points, a tuber has, the bigger it is. These tubers will develop into larger, fuller plants as they mature. Potato tubers are consumed for their carbohydrate energy source. Caladium tubers supply energy stores for tubers to go into winter hibernation and grow again in spring when the days lengthen and soil temperatures rise in the correct hardiness zones, just like potato tubers do when we consume them.