Dumb Cane Plant Leaves Turning Yellow. Why are the leaves on my dieffenbachia turning yellow. Dumb cane dieffenbachia spp is a houseplant named for the toxic sap its canelike stems exude when cut or broken.
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When we first started growing this plant commonly known as dumb cane we also had this issue. Identifying the problem is easy if you take a few minutes to look at the growing conditions your plant is in. Dieffenbachia dieffenbachia spp deserves a role in a mystery novel.
However if several leaves are yellowing at the same time or they aren t the bottom leaves then something may be wrong.
In general these plants need to be watered only once per week but watered deeply so that all of the soil is thoroughly soaked. The dieffenbachia is beloved for its large tropical leaves and easy adaptation to indoor environments. This attractive and easy care houseplant passes under the common name of dumb cane since ingestion of the sap or leaves. The discoloration will often start at the edges and work in toward the centers of the leaves.
