Do Begonias Have Deep Roots

Rhizomatous begonias have an above-ground or slightly below-ground creeping stem that roots wherever it contacts moist soil. Fibrous begonias have a very fine, dense root system with no taproot, and these have the most variation in foliage and growth habit.

Do begonias have shallow roots?

Most begonias prefer shallow containers, and this is especially true of the rhizomatous group. Their root systems grow horizontally rather than plunging downward, so they never sink into the lower half of the soil in a deep pot. With regular watering, that soil remains soggy, creating a situation that begonias detest.

How long are begonia roots?

Once the roots are about ½” long, the cuttings are ready to transplant. Rhizomatous begonias—the kind that are often grown for the their beautiful foliage—will also grow from rhizome cuttings. Rhizomes are the horizontal, thickened stems that grow along or just under the soil.