I am new to orchids and only recently got very interested in them. In a push to get a quick collection going on a limited budget I managed to get some 'bargains' (?) post xmas at The Garden Centre group in the UK, when the flowers had faded. They also generally looked worse for wear - Den leaves slightly yellowing, Cambria with some brown marks.
Anyway, I got the Den 'Thongchai Gold' and Cambria 'Plush' home and repotted within a week into fresh coconut husk (via Ray Creek orchids). The previous mix was very decomposed and damp, plus the centre had wet sphagnum moss likely from seedling days.
Since doing so the Den is continuing to loss leaves turning yellow, to brown. It also has a raised black scab on two leaves. I scraped one off, but the other is below a leave in picture 3 below.
The Cambria is not too bad. It has two plants in one pot, one of which I chucked as it looked bad. The other is ok, but the leaves seem limp and there is brown/black colouration on the p-bulb and one leaf going very yellow. The string in the picture is to steady the plant as it wobbles if I lift it up.
The third fella I have probs with is a small Den (think it is 'Siam Jewel'). Bought it 8 months ago and it flowered very well with healthy foilage for months. By Dec the flowers went and leaves started to slowly drop (not just from lower branches). I repotted a few days ago and found the mix was broken down and damp. Since repot the all leaves are very pale and I am scared I might lose it!
I realise my repot time is not ideal in winter and when plants are not healthy, but it was a case of last resort.
Any advice for a newbie would be greatly appreciated.
Many thanks and sorry my first post is not very positive! But on the the bright side I did also get bargains from same shop on a zygopetalum and miltonopsis which after repotting are both in good shape!