Why Spider Plants Flower and How to Care for Them During Blooming

A spider plant flowering is a normal occurrence once the plant reaches a certain stage of growth. The spider plant (Chlorophytum comosum) is a common perennial evergreen herb with slender, evergreen leaves, mostly grown in pots and hung up for display. A mature plant that has been well cared for usually sends up thin runners from the leaf cluster in spring and summer, and small white flowers open one after another along the runners; the flowers are small and bloom in clusters, and after the flowering period some of the flower positions can even produce small plantlets with roots.

When a spider plant can flower, it shows that it is growing well and the environment is suitable. Generally speaking, plants with ample light, stable temperatures and balanced nutrients are more likely to send up stems and bloom; if kept for a long time in a too-dark corner, or given too much nitrogen fertilizer and lacking phosphorus and potassium fertilizer, they often only grow leaves and do not flower. Varieties such as the variegated spider plant and the silver-edged spider plant flower in basically similar ways, also flowering on the runners and producing small plantlets.

A few points need attention when caring for the plant during the flowering period. First, place the plant in a position with bright, indirect light, avoiding strong direct sun that can scorch the flowers and leaf tips; second, water so that the soil dries out between waterings, keeping the potting soil only slightly moist, and never let water accumulate and cause root rot; during the flowering period, move the pot as little as possible, as a stable environment helps it keep blooming.

After flowering, the runners can be handled as needed. If you want to propagate, wait until the small plantlets on the runners grow aerial roots, then cut them off and plant them separately; if you do not plan to propagate, promptly cut off the spent flowers and overly long runners to reduce nutrient consumption. If your spider plant at home has not flowered for many years, you can appropriately increase indirect light, add phosphorus and potassium fertilizer, and check whether it needs repotting; usually after a period of adjustment you will see it bloom.