Hello....I am growing several in my greenhouse which I keep at 40 degrees or above in the winter both for the proteas and for some vireyas (tropical rhodies). I put them outside in their pots last summer and have had them out again as so as the nights didn't go below 45 although I did protect them from heavy rain until we got to really warm weather.
I have 4 proteas: P. cynaroides, P.burchelli, Leucospermum cordifolium, Leucadendron uliginosum all started from seed from a starter pack from Finebushpeople.co.za
I have a couple of books on growing proteas and they say that P.cynaroides (King Protea) is the best suited for greenhouse growing because it tolerates a wider range of moisture. I would think they could be grown indoors but they do get very large. Here in the pacific northwest there are a few leucodedrons which are grown outdoors in some of the more protected microclimates around Portland and probably also around Puget Sound.
Happy protea growing. jwww

Wow, thank you so much for the help and the website. I will definitely be ordering a seed pack next spring to start growing proteas. :D

Dear D.....
All I have read says to plant them in our late spring (their late autumn). So getting your seeds for next spring would work. Other starter packs I got from the same company require stating in our autumn (restios and heathers).
happy growing.....jwww

So,?

did u ever get any Protea to grow?

I'm also curious to know... from the little I know about proteas, I understand that they require a high degree of ventilation, and wind. Probably one of the harder things to maintain for an indoor plant.

Wow, u should not have a problem.

I have 3 fans going 24/7 in the grow room.

My grow room might be to humid

25-40% in winter, 40-70% in summer