Hoya clemensiorum Kalimantan (Clone 2)

Clone 2 of a Kalimantan Hoya clemensiorum line

Clone 2 is a cultivated Kalimantan line of Hoya clemensiorum, a Bornean climbing epiphyte of wet tropical forest.

Care for Hoya clemensiorum Kalimantan (Clone 2)

• Support and leaf space: Train the vine gradually with soft ties placed around the stem. Guide a healthy leafless runner onto the support and prune only damaged or dead tissue.
• Light around the foliage: Keep the growing point in unobstructed bright filtered light so new growth stays compact and the veins remain clearly visible.
• Watering: Once the surface is dry, soak the mix evenly and let it drain. If the pot remains heavy for several days, improve aeration or reduce the container size.
• Potting mix: Use durable particles that resist compaction to keep the root zone open. Use a mix that keeps its structure between repottings.
• Clone form: Clone 2 develops long, narrow leaves. Guide the runner before the heavy mature blades pull it sideways.
• Temperature and airflow: Maintain even temperatures around the root ball. Gentle circulation is better than a fan blowing directly at the growing tip.
• Feeding: Feed this long-leaved clone after a new root or leaf begins. Increase the gap between applications when the pot takes longer to become light. Allow more time between applications when the drying interval lengthens.
• Flowering and pruning: Guide the long-leaved runner without covering existing peduncles, and keep those spurs when pruning.

Common issues with Hoya clemensiorum Kalimantan (Clone 2)

• A new leaf tears or hardens folded next to a tieLikely cause: The support is unstable, or a tie is pinching the growing point.What to do: Remove the tight clip, refasten the stem loosely and clear the leaf from the frame. Keep the mature leaf in its present shape. Cut away the bend only when the stem has split or begun to rot.
• The oldest leaf yellows while the container stays heavyLikely cause: Dense mix or an oversized pot is keeping the central roots wet for too long.What to do: Lift the plant from the pot and retain only pale, firm roots. Replant in a smaller container with coarse, fast-draining material and keep the stem base above the surface.Urgent warning: Take a cutting from firm green stem before repotting if blackening is already climbing the vine.
• A long narrow leaf bends where the petiole meets the stemLikely cause: The leaf weight is pulling against a clip or an unstable support.What to do: Retie the runner below the petiole and use a rigid support. Do not try to straighten a bend after the leaf has hardened. Cut back to firm tissue only if the stem is split, blackening or soft.
• A long new leaf stops expanding before it reaches full sizeLikely cause: The growing point was restricted by a tie, dry spell or sudden change in light.What to do: Release any tight tie, keep the growing point in bright filtered light and water after the upper mix dries. Leave the firm leaf attached; the next leaf should reach the usual size if the roots and tip remain healthy.

Hoya clemensiorum Kalimantan (Clone 2) and pet safety

Hoya clemensiorum Kalimantan (Clone 2) is treated as non-toxic to cats and dogs. Chewing leaves or stems can still cause temporary drooling, vomiting or diarrhoea. Keep the plant out of reach of pets that chew foliage, and contact a veterinarian if symptoms are severe or persistent.

Honouring two collectors of Bornean plants

The name Hoya clemensiorum honours Joseph and Mary Strong Clemens. Their collections contributed substantially to knowledge of Mount Kinabalu and other Bornean flora.