shrinking bulbs

Last year a had 3 Amaryllis bulbs, two of which shrunk shortly after flowering and are now no more, the third has been in full leaf all summer and is looking better than ever as it gets ready to flower again. During this summer i bought a young Brusvigia Graniflora which due to the short period of time i have had it, its age and its growing times so far it has done nothing..........apart from start to shrink!

Can anyone give an explanation as to why this is happening/happend and is there some kind of resolve to this issue?

 

It's possible that there is a lack of water/feeding whilst in growth. This is the period when the bulb builds up its strength.
Were they all in the same pot? I personally prefer to keep all pot grown bulbs of the Amaryllis family in individual pots - we can never be sure of them all being at the same stage of growth at the same time and bulb rot can be a problem.

 

Thanks longk. No they are not in the same pot, all were planted in a good mix of garden soil, grit, and a good handfull of compost amongst other natural fertalisers. I also have a young Crinum Procerum var Splendens which seems to be heading the same way. Will be gutted to see it go. :(

 

Personally, I would allow the Amaryllis to die back and "rest" for a couple of months. Repot individually in the spring and use this summer to fatten them back up.