Hoya Wrinkled Leaves: Thirst or Damaged Roots?

Hoya leaves are thick and succulent. When they wrinkle, pucker, or feel soft and bendy, the leaf has lost water it cannot replace. That points to one of two opposite problems: the mix has been dry too long, or the roots have stopped working.

Iowa State University Extension puts it plainly in its hoya care guide: wrinkled or soft leaves may mean underwatering, but if the soil is wet and the leaves still look stressed, roots may have been damaged by overwatering. Watering fixes the first case and worsens the second. So check the pot before you reach for the watering can.

First, rule out a leaf that is meant to look like that

Some hoyas are bred for folded or curled foliage. NC State Extension describes Hoya carnosa ‘Compacta’, also sold as ‘Krinkle Kurl’ or Hindu rope, as having leaves folded over into a rope-like shape. On those plants, judge water stress by softness and new thinning, not by the curl itself.

Old leaves can also keep creases from a past dry spell. Look at whether the wrinkling is new and whether the leaves feel limp.

Signs that point to a dry pot

Virginia Cooperative Extension’s container watering guide lists these signs of underwatering. On a hoya, look for several together:

• The pot and plant feel very light when you lift them.
• The mix is dry well below the surface, not just on top.
• The mix has shrunk away from the sides of the container.
• Leaves are thin, limp, or wrinkled, and may curl.
• Some leaf tips or edges are dry and brown.

Use the finger test the Virginia guide describes: push a finger 2.5–7.5 cm (1–3 in) into the mix, deeper in bigger pots, to find dry spots.

Signs that point to damaged roots

NC State Extension notes that hoyas need a free-draining mix that dries between waterings and do not tolerate soggy mix or wet roots. Iowa State adds that overwatering in poorly drained soil is the quickest path to root decline.

Suspect the roots when you see:

• Wrinkled leaves while the mix is still damp.
• Leaves that stay wrinkled a day or two after a good watering.
• Yellowing leaves alongside wet mix.
• Soft or dark stems near the soil line.
• A sour or rotten smell from the pot.
• A heavy pot, dense mix, or a saucer holding water.

The University of Maryland Extension page on root rots of indoor plants describes rotted roots as brown to black and soft. The outer layer of a rotted root can slip off and leave a thin strand behind.

Rehydrate a dry hoya

1. Water slowly until the whole root ball is wet and water runs from the drainage hole.
2. If water rushes straight through or around the edge, give two or three slow applications. Virginia Cooperative Extension recommends this to rewet dry potting mix.
3. Let the pot drain fully. Do not leave it standing in a saucer or basin for more than 60 minutes; the Virginia guide warns that longer soaks can lead to root rot.
4. Watch the leaves over the next few days. Firm, healthy roots should let them fill out again. Deep creases in old leaves may remain.
5. Go back to a wet-dry cycle. Iowa State recommends watering thoroughly, then letting the mix dry almost completely before the next watering, with less water in winter and low light.

Rescue a hoya with damaged roots

1. Slide the plant out of the pot when the mix is wet but the leaves keep wrinkling.
2. Rinse or tease away the old mix so you can see the roots.
3. Cut off soft, dark, or mushy roots with clean, sharp scissors. Keep firm, light-colored roots.
4. Repot into fresh, airy mix. Iowa State suggests potting soil combined with orchid bark and perlite or pumice.
5. Choose a pot sized to the remaining roots. Iowa State warns that oversized containers keep the mix wet longer.
6. Water once to settle the mix, then wait until it dries before watering again.
7. Hold off on fertilizer until new growth appears.

If nearly all roots are gone, take stem cuttings from firm, healthy stems. Maryland Extension advises taking cuttings only from healthy tissue and discarding severely infected plants. Iowa State recommends cuttings with one or two nodes, rooted in water, moist sphagnum, or a light propagation mix.

Prevent the next round of wrinkling

• Check the mix with a finger, not the calendar. Water use rises in bright, warm months and falls in winter.
• Use a pot with a drainage hole and empty saucers after watering.
• Repot only when needed. NC State Extension notes that hoya doesn’t mind being pot-bound and recommends moving up no more than 5 cm (2 in) in pot size.
• Keep the plant warm. Iowa State gives 18–27 °C (65–80 °F) as the best indoor range and warns that hoyas do not tolerate temperatures below 13 °C (55 °F).

For broader care, see the hoya care guide and our guide to telling overwatering from underwatering. The hoya hub collects our other hoya pages.

Related guides

Other hoya problems we cover: blooming triggers, whiteflies, yellow leaves, root rot, scale.

References

• Iowa State University Extension and Outreach: All About Hoyas
• NC State Extension Gardener Plant Toolbox: Hoya carnosa
• NC State Extension Gardener Plant Toolbox: Hoya
• Virginia Cooperative Extension: Properly Watering Container Houseplants (SPES-804)
• University of Maryland Extension: Root Rots of Indoor Plants