Chrisg wrote:...my aloe plicatilis which is growing and branching nicely.

That looks great. MIne is suffering from having been kept indoors too long. All my tender
Aloes are, but
A. plicatilis, despite being kept dry, always makes a bit of etiolated early-Spring growth before I can get it outdoors. In 2012, it went out in March and rapidly outgrew the spindly, floppy leaves, but this year, not only is there twice as much indoor growth, but it has all been bleached by this week's sunshine. It will probably be OK, but it's going to look pretty weird for awhile.
My experience with this sp. is that it grows much faster if it gets a
lot of water in warm weather. I don't know where its native range is (somewhere in South Africa...), but I'd guess it's somewhere with heavy, frequent Summer rains.