Gardening

Overwintering Houseplants – Learn About Dieffenbachia Winter Care

Overwintering houseplants is important, both for those growing outdoors in summer and those that are year-round houseplants. Dieffenbachia, a popular tropical houseplant, needs specific conditions in the winter that differ from the growing season. Know how to winterize dieffenbachia to keep these gorgeous plants healthy and thriving.

About Dieffenbachia Plants

Dieffenbachia seguine is also known as dumb cane. It is a tropical plant native to the Caribbean and South America. In the U.S. it grows outdoors in zones 10 through 12. In most places, though, it serves as a popular houseplant.

Outside, in its natural conditions, dieffenbachia can grow quite large, up to 6 feet (2 m.) tall. In a container it can still grow several feet tall, up to 3 feet (1 m.). The leaves are the reason to choose dieffenbachia as a houseplant. They are large, evergreen, and colorful with different patterns and colors depending on the variety. As a houseplant, dieffenbachia is low maintenance.

Dieffenbachia Winter Care

During the growing season, dieffenbachia prefers indirect light, regular watering, high humidity, and occasional fertilizer. Dieffenbachia care in winter is different. Growth slows down and its needs change. 

Water less frequently in the winter. Let the soil dry out on top before watering. Allow the plant to drain completely after watering. Too much water can lead to stem or root rot. Stop fertilizing. Dieffenbachia does not need fertilizer in winter. In fact, fertilizing during the winter can cause brown spots to form on the leaves.

Keep dieffenbachia warm. Keep your overwintering dieffenbachia in a spot that will remain over 60 degrees Fahrenheit (16 C.). Don’t let it get too hot either. The plant should be out of direct light and away from heaters or radiators.

Watch for pests and diseases. Dieffenbachia is generally a healthy plant with few issues, but there are some winter concerns. Winter brown spots are caused by overfertilizing but also excessive dryness. Water less but still water occasionally and give the plant a misting once in a while. Overly dry conditions can also lead to spider mites. Watch for them on the undersides of leaves. Stem rot is common with overwatering.

Dieffenbachia is a great houseplant, but it does require specialized winter care. Note: This plant is toxic and creates sap that is irritating, so take care around children and pets.

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