Since last year I have been using Mirace Gro with, what I think, success.

How long from cutting to flowering plant varies a lot. Some species flower very early, within a few months, other take years.

Hi Karri,
I haven't been growing Hoyas for very long , but I will note a few things that work for me ,in my area.
All of them live outside ,hanging on shepherds hooks, hanging off the lattice fence, or on a bench. A large carnosa is on a plantstand , and there are some others on hooks in the screened porch.
I don't fertilize in winter, and I keep the soil dryer at this time , with the exception of multiflora. I can't speak for hoyas grown as houseplants or in a greenhouse , but mine are not actively growing right now. When we have nighttime temperatures below 50* F , I bring them into the garage or house. The carnosa varieties can stand a little colder. I really don't mind the effort of moving them, and I have never noticed any 'objections' from the plants about being moved around. Last Sept. these Hoyas spent quite a number of days neglected in the garage , or in a stuffy house, ( no power for 9 days, then no power for 7 days ) due to the hurricanes. Growing and flowering continued as if nothing happened.
I use Miracle Gro and alaskan fish fertilizer. I don't recommend the latter, for houseplants !
I can't answer your question properly , about how long for flowering. There are too many variables. I have had young rooted cuttings flower, ( longifolia, nummulariodes, multiflora ) and my largest carnosa ,which is on a plant stand has never flowered. This would likely be my fault because it was overpotted one year ago and I didn't correct this when it was small and easy to handle . Now it is all over the trellis and on the floor of the screened in porch. I asked my husband if he would please put it high up in one of the oak trees , this Spring. I am fortunate to live in a climate where I have this option.
You might want to hang your Hoya outside, during the warm months. They love humidity. Be careful of direct afternoon sun. Mine get just morning, late day sun , or dappled sunlight.
We can buy bags or loose sq. yards of rich well draining potting mix, at our local nursery. You can see and feel the fine bark bits in it. I love the smell of it and it doesn't rot.
Good luck,

Florajilly

Florajilly
~Your winter is more than likely our summer here in Zone 5b~ Michigan...LOL..
I've seen the potting soil you talk about & will look for it today seeing how
I'm heading to Lowe's this afternoon.
Maimiti~
I also think I've been having good growth (luck) w/ mine also.
I was wondering if maybe I'm over fertilizing thou.
How often do you both fertilize?
I know in some flowers that if you feed to much then it will not bloom!
I feed once a month. I mix everything in a gallon jug.
Water everything from there.
Thank You Both for helping.
Karen

Karen
During late fall and winter I don't fertilize at all.
I start about jan/feb. I use the smaller part of the spoon. 1 part/ liter (that would be apporox. 4 parts per US gallon, a bit less) and every time I water the plants. When I used my old fertilizer I used it only once every two weeks, but when I started with MG I changed the routine and it grew into a habit.

H. lasiantha grows in a self watering container so I don't fertilize that one as often, once a month I'd say, but with the same mixture as above. So that one actually gets less fertilizer than the others but it works anyway.
/ Maggie

I use Superthrive about once a month or so on all my plants, including the hoyas. I don't know if it really works or not (its so controversial, but I figure, what the heck?) One drop per gallon is considered safe for any plant. Just thought I'd throw that in.

Randi

Hi all,
I have a hoya that I got as a tiny shoot abot 3 years ago, and I started feeding it beer diluted in the water and it went nuts last highseason. Once it went dormant not much have happened, It never leafed out on the two last long shoots..
They look kinda crazy, no weak growth, rather the conctrary, two last stems stopped growing at 2ft, and they both are standing like a arrow in the air, half filled with leaves.
I see on has a longer spur than the others, with spur I would mean the part that looks dead.
I wonder , IS it dead, the others are aprox 2" long but this is closer to 7-8...?

Hmm, I am thrilled and hope to see some plants this year.
somebody told me they need to be a bit potbound to bloom?
is that true?
My shoot went almost straight in to a 11in hanging pot.
I do not know if the pot is filled yet.

I also got a picotee grenn with white trim,a gnarly looking one, a rescue from homedepot,the stems are a lot thicker and somehow coarser than my solid large leaved green,
what could it be?

Oh dear, I just went in to my closet and had a look at it, it has blotches of white powder spread over it, on branches and leaves, what could that be??
It is very dry and hangs approx 3 ft away from a eastern window, my coolstorage...
I do not recognise this type of pest.
I cant see any bugs anywhere, nothing is wet, just like little piles of flour...????
Help!
Klk

I would guess that the white piles are mealie bugs. Can you take it outside and spray it thoroughly with rubbing alcohol. I think you should raise the humidity, mist it. Most Hoyas will not bloom until rootbound. Some people keep them in 4" pots to get them to bloom.

I went straight to walgreens and got alchol, I gave it a good spray and soaked it, now it is out in the staircase, while doing this I noticed my grapevine was affected too, they both responded well to the 1st spray and I ahven't seen any recurrence on either, tvi, tvi ta i tra../knock on wood.
I did not know about the potbound thing, oh yes I did but not to such extreme measure's, is that good for the plant?
One would think a good developed rootsystem is best, no?

I've had really good luck using Schultz "Bloom Plus." The concentration is 10-60-10, and it does seem to promote rapid blooming like the label claims. I use 1/4 t. per gallon plus a drop of superthrive every time I water, and used to fertilize mildly all year, but this winter have cut back as an experiment. So far can't see much difference and currently have australis, lacunosa, and heuschkeliana in bloom and shepherdii is budding up.

I agree with the others that a lot has to do with what kind of hoya you have. Some seem to need to concentrate on growing their roots first and some don't. For me, carnosas and compactas took several years while obscura and shepherdii bloomed within a few weeks. For a lot of them, I think heat, sun and humidity play a huge role.

Just what I've found--Good luck w/ yours! 'Mare