Why aren't my Phlas (bellina and violacea) growing?!

[mossmac]

Hi all,

About eight or nine months ago, I purchased a Phal bellina and a Phal violacea (off the internet).

Both plants were expensive, and a lot smaller than I had hoped or expected. The leaf span of both plants is no more than 10cm. Both plants have only three leaves.

Since having bought the plants, they haven't grown any new leaves at all, and their current leaves are 'ageing' somewhat.

I have checked the roots - both plants have lovely, green, plump roots so that can't be the problem.

I have many, many other Phals in my collection, and all of them are thriving. I even bought a large violacea (as I was getting fed up with the small one's lack of vigour) and it too is thriving.

I am at a loss as to what to do to get my two plants to grow. I think when I got them, they can only literally have been out of a flask for the minimum amount of time.

I would be grateful for any help/ advice. Sorry I can't post any pics, but I don't have access to a camera at the moment.

Mossmac