Caladiums are tropical plants that grow quickly enough to be used as annuals in milder climes during the summer or as houseplants all year. These low-growing show-stoppers thrive in warm, damp, gloomy locations where many other plants would perish. They can survive in filtered sunshine, intense indirect light, or partial shade, but prefer full shade in hotter climates. Provide them with well-draining soil, and if water puddles appear 56 hours after a heavy rain, choose a new location or enrich the soil with organic material to promote drainage.
When to Plant
After the risk of frost has passed and daytime temperatures remain over 70 degrees, plant your Caladium tubers outside in the spring. Although these plants will only develop in warm soil, if you live in a colder region and want to get a head start, you can start them inside 46 weeks before the normal last frost date. Your Caladium tubers will sprout and root a few weeks after planting, depending on the soil quality and air temperature.
How to Plant
- Find a site where your Caladiums will receive filtered sunshine, brilliant indirect light, or moderate shade for outdoor landscaping planting. Plant the tubers about 2″ deep and 812″ apart, with the growth points or “eyes” facing up, in holes dug about 2″ deep and 812″ apart.
- Select a container with adequate drainage holes and fill it with good quality, well-drained soil for container gardening. Almost any potting medium that is commercially available will suffice. With the growth points or “eyes” facing up, plant the tubers about 2″ deep.
How to Grow
- Water your Caladiums just enough to keep the soil slightly damp, but never saturated.
- After the season is through, tidy up the garden by removing any yellow foliage.
- If you reside in a climate with cold or wet winters, dig out the tubers before the first frost in the fall. Allow them to air dry for a few days before keeping them with peat moss in a cool spot.
- Allow a few months for your Caladiums to rest before starting the next growing cycle.
Caladium Tips & Tricks
- To increase the level 23″ and enhance drainage, amend the soil with compost, finely crushed bark, or composted manure.
- Caladiums should be planted in regions where they will be protected from the wind, as their big leaves are vulnerable to harm.
- After a few weeks, roots and sprouts should appear, with mature sizes reaching up to 25 inches tall.
- Caladiums can be mixed with other plants in the same pot, but they must all have the same light and water requirements.
- To add some colorful beauty to mixed bouquets, pinch off a few leaves during active development.
Do caladiums grow well in pots?
- Caladiums thrive in pots and planters, as well as hanging baskets. In containers, soil temperatures are frequently higher, which caladiums like. Planting caladiums in containers in northern places where the soil temperature may not reach 70°F until June provides the tubers a head start.
Should I soak my caladium bulbs before planting?
Caladium tubers resemble a cross between a potato and a ginger root. They arrived on a paper roll with dry rice husk filled within. They serve as a cushion as well as a means of keeping the tuber dry during shipment. According to what we’ve read, it normally takes 13 weeks for the first leaf to appear.
A Caladium bulb has two sides: one on top and one on the bottom. Leaves sprout from what are known as eyes, which resemble potato eyes. The eyeballs, on the other hand, can only be located on one side of the bulb. The bottom side is usually smoother and free of irregularities. If you live in a colder climate, soaking the bulbs in lukewarm water for about an hour before planting them is a good idea. This stage can be bypassed in our tropical region because the temperature is warm enough to cause the bulbs to sprout.
Which side is up on caladium bulbs?
These architectural plants are also well-suited to container gardening. They grow into a luxuriant mound of leaves that keep their shape and don’t sprawl or droop. By gently tipping the pot and feeling the weight, you can easily monitor the moisture levels of any potted plant. Keep in mind, too, that any form of waterlogging will do these tubers no favors, so stay away from any swampy regions. If you’re growing in containers, make sure your pots and plants have drainage holes in the bottom. Your tubers will be absolutely pleased and will repay you with vigorous development once you have a moist yet well-drained growing medium!
When to plant Caladium bulbs
Keep in mind that these tropical beauties demand plenty of steady warmth when deciding when to plant out your Caladium tubers. When planting outside, the safest option is to wait until late spring, when any chance of frost has gone in your location and the soil has warmed up to the point where a steady level of heat can be expected. You can even start them a little sooner if you’re in a warm environment like a greenhouse, conservatory, or your own home.
How to plant Caladium bulbs
Caladiums are brown when they arrive, with a rough, knobbly side that contains the growing points and a smoother side that should be planted with the growing points facing up. Plant tubers at a depth of 5cm, and start them off in individual 6″ pots. Any rich potting compost will enough for the growing medium; you can boost the organic matter levels even more by adding some bark chips (such as Orchid compost) or moss.
How long does it take for caladium bulbs 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.
Do caladium bulbs need sun to sprout?
- 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.
- 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.
How often should I water caladiums?
Moisture and feeding are the most critical aspects of caladium care. Fertilizer will help the plants grow stronger so that they can produce enough tubers for the following growing season.
Caladiums require constant watering, especially during periods of drought. Watering them on a weekly basis is actually suggested. Container-grown caladiums should be examined every day and watered as needed. Mulch around caladium plants, especially in pots, will aid to conserve and maintain moisture.
Caladiums must be dug up in the fall and preserved indoors throughout the winter in cold locations because they are considered sensitive perennials. Caladiums can be carefully plucked from the ground once their foliage turns yellow and begins to fall apart. Place the plants in a warm, dry place for at least two weeks to allow them to dry out. After that, remove the foliage and place the tubers in a netted bag or box with dry peat moss on top. Put the tubers away in a cold, dry place. You may transplant outside once spring arrives. Caladiums can be overwintered inside if they are grown in containers.
You may add these lovely plants to your landscape now that you know how to plant caladiums. Caladium bulb planting is simple, and with good caladium maintenance, they can last for years.
Do caladiums come back every year?
Caladium plants (Caladium spp.) grow from bulbs and are hardy in USDA zones 9 and 10. The bulbs will return each year in warmer climates. Because cold weather can easily destroy the tubers, you can dig them up for the winter and transplant them in the spring.
What is the best soil for caladium?
Caladium can be grown in the garden in a rich, well-drained soil or in a potting mix for containers, such as a moist mix of soil and peat. The soil in your garden should be similarly rich and well-drained. At 5.5 to 6.2, the optimal soil pH is somewhat acidic.
What is the best fertilizer for caladiums?
Caladiums thrive in the shady understory of open, high-branched trees. In full shade, they will do pretty well, but the color may not be as vibrant. Caladiums have traditionally required shelter from direct sunlight for optimal development and color, but some of the newer cultivars may tolerate a few hours of direct sunlight every day. When cultivated in the sun, most pink-leaved caladiums turn brownish and burned.
Caladiums prefer damp, warm soil. It is preferable to have a minimum soil temperature of 70°F. Cool soil temperatures cause tubers to decay before sprouting if they are planted too early in the spring. Some gardeners choose to start tubers inside in a shallow flat or flower pot with damp peat moss or potting soil. Cover the tubers with just enough soil and place the container in a warm, well-lit area. Tubers should be started indoors four weeks before being planted outside.
Caladiums should be planted in well-drained soil with a pH of 6.0 to 6.5 for optimal growth. To improve soil aeration, drainage, and organic matter content, add a 2- to 3-inch layer of pine bark mulch or compost to the soil. Unless the soil is thoroughly aerated, root and leaf growth will be limited. Add a complete fertilizer, such as 8-8-8, at a rate of 1 to 2 pound per 100 square feet of bed area (2 tablespoons per square foot). Small tubers should be planted 2 inches deep and 8 inches apart, while giant tubers should be planted 12 inches apart. From the top of the tuber, both roots and shoots emerge; place the knobby side up.
To conserve moisture and keep the soil cool, mulch with a 2- to 3-inch layer of organic material. Leaves with more green color and less of the highly sought, vivid colors may result from soil temperatures above 85°F. Nitrogen fertilization at high amounts can have the same effect. Caladiums are heavy feeders of potash and phosphate, and they require enough of moisture and fertilizer throughout the summer to produce healthy tubers for the following growing season. During the growing season, use 1 tablespoon of 5-10-10 fertilizer per square foot every 4 to 6 weeks. Use a heaping tablespoonful for individual plants; a level teaspoon per pot for plants grown in containers. Allow no fertilizer to come into contact with the leaves. To avoid fertilizer burn, water properly after fertilizing. Caladiums are drought-resistant and need to be watered frequently.
Plants will occasionally produce a bloom that resembles that of a Jack-in-the-Pulpit or a calla lily. The flower pulls energy away from the leaves and reduces tuber size, thus most home gardeners choose to remove it.