Leicestershire, United Kingdom

I havea 1m tall Erythrina Crystagalli, usually kept in a conservatory.Until recently it has looked very healthy, although not flowered, but now most of the leaves are becoming spotted - see photo. Any ideas.
It is well watered and is fed every week.
Some of the lower leaves are turningyellow, which may be seasonal - in the UK.

On plant Erythrina

• 2 Sep, 2010