Purple waffle plants are excellent specimens for the patio container or hanging basket. When planted in combination with other tropical plants, they serve the function of a trailing plant or “spiller.” Paired with a tall specimen such as ti plant, the purple waffle plant will nicely cover the soil.
Light
The purple waffle plant does best in partial sun outdoor or in bright indirect light indoors. Direct sun can cause the edges of leaves to scorch or the color to bleach, and the cool metallic sheen of the leaves may also fade in direct sun. But without enough light, the plant may lose its rich purple color. Purple waffle plants will also thrive under artificial lights.
Soil
If planting purple waffle plant as an outdoor perennial or annual, give them moist soil, and add compost or leaf mold to lighten and enrich the soil. An all-purpose potting mix or commercial potting soil is adequate for purple waffle plants grown as houseplants
Water
If the purple waffle plant is moist, it’s happy. Moist, well-drained soil is the goal. The plants don’t need to be soaking to the point of runoff. Instead, think of a wrung-out sponge and irrigate the plants to achieve this level of moisture. If your environment is exceedingly dry or you can’t ensure regular irrigation or aren’t around enough to provide proper irrigation, add water-absorbing crystals to the soil to help retain moisture.
Temperature and Humidity
Warm temperatures and high humidity conditions are a must for cultivating healthy purple waffle plants. Bring plants indoors before frost, or preferably before temperatures dip below 50 degrees Fahrenheit. Increase the humidity around your waffle plants by misting the plants or growing them in a tray full of pebbles and water. A steamy bathroom with a window serves as an excellent plant spa for sickly waffle plants that have spent one too many days by the heater.
Fertilizer
In their native habitat, purple waffle plants grow in the understory of jungle areas rich in nutrients from decaying leaves. Replicate these nutritious growing conditions with plant fertilizers to achieve a lush plant. A slow-release 6-12-6 houseplant fertilizer will provide a steady nitrogen, phosphate, and potash diet for healthy growth. Too much feeding, however, can make the plant leggy and spindly, rather than bushy and full.
Types of Purple Waffle Plant
There are several cultivars of H. alternata to consider:
‘Belgian Waffle’: This cultivar has foliage with green and cream edges on the top and purple undersides.‘Red Flame Ivy’: This cultivar reverses the color pattern of the leaves—the topsides that are deep purple and undersides that are greenish-gray.‘Snow White’: This cultivar has green topsides dappled with white and pink and magenta undersides.
Pruning
In warm weather zones where it is grown as a perennial garden plant, there is the potential for purple waffle plant to spread rather aggressively. They can easily be kept in check simply by digging up the offshoots that root themselves around the main plant. Such pruning is not necessary in colder regions where the plant is being grown as an annual. Potted plants or indoor houseplants can be kept pushing by pinching off the stems just above a leaf node. This prompts additional offshoots from the point of pinching.
Propagating Purple Waffle Plant
Purple waffle plants have a spreading growth habit, with new roots forming at each growth node as it spreads. Plants that spread in this way are easy to propagate, giving you an unlimited number of plants.
How to Grow Purple Waffle Plant From Seed
These plants are very easy to propagate by stem cuttings, so seed propagation is not common. The flowers are very small, and the seeds are hard to collect and plant.
Potting and Repotting Purple Waffle Plant
Purple waffle plant is best potted in a standard commercial potting mix, and any kind of container will do. It has a slow to moderate growth rate, and you won’t need to repot often. if your plant is healthy, you will need to repot it when you notice roots coming out of the drainage holes—usually no more than every four or five years. The stems of waffle plants break easily, so it’s important not to pull the plant from its container by the stems. Instead, turn the plant over and gently tap on the bottom of the container. Use a butter knife to coax the rootball away from the container sides if it’s particularly wedged in place. Use good quality potting soil to fill in the additional space in the new, larger container.
Common Pests & Plant Diseases
Most of the common problems that occur with purple waffle plants occur when they are potted as indoor plants, and they are similar to those that plague many houseplants. Scale and whiteflies are the most common pests. Insecticidal soaps are the best way to treat these insects in a non-toxic way. Spray the tops and bottoms of the leaves every seven days until the infestation disappears. Root rot is the most common disease, which usually occurs when a plant is watered too much or is growing in a potting soil that retains too much moisture.
How to Get Purple Waffle Plant to Bloom
The flowers on purple waffle plant are indistinct, so few people worry when a plant fails to bloom. Should you want the plant to blossom, however, a more frequent feeding schedule may help. But be aware that too much feeding often leads to spindly, leggy growth, which detracts from the plant’s overall attractiveness.
Common Problems With Purple Waffle Plant
This is a fairly carefree plant, and other than some common indoor pests (see above), its problems are few.
Plants Are Spindly
Purple waffle plants that are excessively spindly and leggy may have been overfed or underpruned. Pinching off the stem tips will help force the plant to branch out and become bushier. And make sure not to overfeed the plants, as this can also stimulate the plant into long but sparse growth. A plant that is overfed may also show white spots on the leaves.
Leaves Are Yellow
Although not a common disease, downy mildew can affect purple waffle plants, and one symptom is yellowing, mottled leaves, The undersides of the leaves may show dark spots. If you catch it early on, downy mildew can be stopped by spray fungicides, but with a severe infestation, you are better off discarding the plant.
