Hoya carnosa also known as the Indian Rope Plant or Wax plant, is an Asclepiad species of flowering plant of the dogbane family Apocynaceae.
It is one of the many species of Hoya that are native to Eastern Asia and Australia.
It is a common house plant grown for its attractive waxy foliage and for the unique flowers.
This is my experience on Care & Maintenance of Hoya.
Firstly I may that I had faced many challenges and few had rotted or dried off in my care.
And somehow with the little I had, it grew and populated my garden and became invasive.
These are the few factors:
This require a fast draining medium - something like orchid medium mix. It does well with a mixture of perlite, sphagnum moss, cocopeat & bark mix. It should not be a strong drainage mix where it doesn't hold any moisture at all but it should not be holding water too where the roots and stem can rot too. The balance of both is ideal.
I water daily and twice during the hot dry days. They can go without water for few days to a week and perhaps you have to take note on how the foliage appearance - if it appears withered than watering is mandatory. The downside of watering will cost the leaves to turn yellow and start rotting - therefore - the right balance is necessary.
Hoya is not a totally shade loving plant but you can place them in bright indoors area. I for one had experience where when it is placed in dark areas - they rarely bloom and the growth appears to be very leggy (the leaves nodes along the stem appear to phase out far apart and it is very unsightly especially when you prefer to have a compact foliage plants)
These Hoya buds have these star shaped formation when they are closed and they slowly open up the petals when blooming. This particular one is the pink colored variety.
It is going to be difficult to tell the difference by identifying the foliage - the best is not to mix them up or you may not know which is which.
Once the flowers are fully bloomed, it will last for few days depending on the condition. There will be a rich nectar dripping off from the flowers which will attract ants and nectar loving insects - and so, do be prepared for that if you are planning to cultivate this one in your garden.
Another thing about Hoya is they only bloom when they receive good sun.
Without it - it may not bloom.
Hoya is a trailing plant and more on the wild side. The seemed to do well in most unforgiving conditions but at times - just barely surviving and it is indeed a slow growing plant - so don't expect much if you received a small cuttings and looking forward for new growth - It may take many months to actually notice anything.
I for one, just place them in their ideal spot and consider that done there and routinely water them on daily basis and weekly spray flowering fertilizer on them hoping them to bloom. Otherwise, it's another trailing green foliage plant that I'm contented with.
1) Do not dead-head the dried flower buds as the new flowers blooms from the previous dried flower spike.
2) Do take effort to foliar fertilizer on them to induce new growth or else it will remain in that same size for months.
3) It's a trailing plant - so do allow space for it to grow and trail heavy, it will climb and vine everywhere - so do take note on that garden space in place them permanently as once it captured and coiled within the garden space - it will be difficult to remove them without cause damage to the vine or foliage.
4) This plant does produce aerial roots and may start off new shoots hence a new plant from a different location where it had rooted.
This is the seedpod of Hoya.
The seeds are airborne similar behavior like the adenium (desert rose seedpod) where there will be white fluffy filament - just like dandelion seeds.
It may take forever to cultivate them using seeds - it can be done but I would recommend using cuttings as they are more stable and promising.