Mature size & growth rate

How big does Deyke's Wax Plant (Hoya deykeae) get?

Also called Deyke's wax plant, Wax plant, Heart-leaf hoya.

More about deyke's wax plant

About Deyke's Wax Plant

Hoya deykeae · also called Deyke's wax plant, Wax plant · tropical

Hoya deykeae is a slow-growing evergreen epiphytic or lithophytic vine native to the tropical rainforests of Sumatra, named in honour of Mrs Deyke van Donkelaar. It is prized by collectors for its attractive heart-shaped leaves and pendant umbels of 15–30 small, waxy flowers. Allow the soil to approach dryness between waterings — this species is particularly sensitive to wet conditions that cause rapid yellowing and root rot. The ASPCA lists the Hoya genus as non-toxic to cats and dogs.

Mature size: Typically reaches 60–150 cm (2–5 ft) indoors over several years; compact and manageable compared with many vigorous Hoyas.

Watch for — Reluctance to bloom: Insufficient light and pot size are the main obstacles. Hoya deykeae flowers best when slightly root-bound; resist repotting into a larger pot until roots are visibly escaping the drainage holes. Move to a brighter indirect-light position to encourage bud development.

Indoor size vs how big it gets in the wild

Deyke's Wax Plant does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims. Indoors and in a pot, expect typically reaches 60–150 cm (2–5 ft) indoors over several years. In the ground with no restriction it is a completely different plant — compact and manageable compared with many vigorous hoyas. — which is why the pot, the light and the pruning matter so much for the size you actually end up with.

Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Growth rate and years to mature

Deyke's Wax Plant is a slow grower. Realistically, expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Its feeding profile backs this up: apply a diluted balanced liquid feed (half strength) every 3–4 weeks during active growth in spring and summer. supplement with a high-potassium feed when flowering begins. withhold feeding entirely through autumn and winter.

Want this turned into the right next pot at the right moment? The pot size calculator and the deyke's wax plant repotting guide cover when and how much to size up — pot size is one of the biggest levers on how fast deyke's wax plant grows.

How to keep deyke's wax plant smaller

You are not stuck with the maximum size. For deyke's wax plant specifically, these are the levers, in order of impact:

Trim the longest vines back to the length you want — deyke's wax plant takes hard cutting well and bushes out from the cut.
Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser.
The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants.
A trim once or twice a season is usually enough to hold its length.

The keep-it-smaller method, step by step

Decide the length you want. Pick the point each vine of deyke's wax plant should stop — you can be aggressive; it regrows readily.
Cut just above a node. Snip about 0.5 cm above a leaf node so the stem branches there instead of dying back.
Root the cuttings. Drop the trimmed pieces in water or mix — they root in 2-4 weeks and can fill the same pot for a bushier look.
Repeat as it runs. Re-trim whenever it overshoots; regular light pruning keeps it both smaller and fuller.

How to grow deyke's wax plant bigger or faster

If you want it to fill the space sooner, push the conditions rather than hoping — for deyke's wax plant the accelerators are:

More (indirect) light dramatically lengthens the vines and enlarges the leaves.
Give it something to climb — many vines grow far faster and bigger up a support than trailing.
Feed through spring and summer and keep it consistently watered while it is actively running.

Light is almost always the ceiling. The deyke's wax plant light requirements page covers exactly how bright a spot it needs to grow at its potential instead of stalling.

When deyke's wax plant outgrows the room (or the pot)

"Too big" usually arrives as one of these signs for deyke's wax plant:

Vines pooling on the floor or wrapping past where you want them — purely a trimming cue, not a repot one.
Bare, leggy stems with leaves only at the tips (usually a light problem, not a size one).
A tangled mass that has outrun its support and needs cutting back and re-training.

If it is the pot rather than the room, it is a repotting job, not a goodbye — see the deyke's wax plant repotting guide. If you want more of this plant instead of a bigger one, the deyke's wax plant propagation guide turns prunings into new plants.

Deyke's Wax Plant size — frequently asked questions

How big does deyke's wax plant get?

Deyke's Wax Plant reaches typically reaches 60–150 cm (2–5 ft) indoors over several years when grown indoors, and far larger where it grows unrestricted (compact and manageable compared with many vigorous hoyas.). Growth shows up as lengthening stems that trail down or climb up a support; the plant can be kept tiny or grown metres long from the exact same root system.

Is deyke's wax plant slow or fast growing?

Deyke's Wax Plant is a slow grower. Expect many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Deyke's Wax Plant does not get tall — it gets long. Size here is about stem length and how you train or cut it, not how much floor it claims.

How long does deyke's wax plant take to reach full size?

Roughly many years — it gains very little each season, so it can hold the same shelf-sized footprint for 5-10+ years. Light, pot size and feeding move that timeline more than anything else.

How do I keep deyke's wax plant smaller?

Trim the longest vines back to the length you want — deyke's wax plant takes hard cutting well and bushes out from the cut. Cut just above a leaf node; each trimmed stem usually branches into two, so pruning makes it fuller, not sparser. The cuttings root easily in water or mix, so "keeping it smaller" doubles as free new plants. A trim once or twice a season is usually enough to hold its length.

How can I make deyke's wax plant grow bigger or faster?

More (indirect) light dramatically lengthens the vines and enlarges the leaves. Give it something to climb — many vines grow far faster and bigger up a support than trailing. Feed through spring and summer and keep it consistently watered while it is actively running.