The geraniums we grew last year in 5 litre paint tins were noticeably
superior to those grown in plastic or terra cotta pots.
I wonder whether this is to do with being metal or the fact that they
are straight sided and present less area at the top for evaporation.
Anyone got any thoughts?

wrote in
oups.com:

The geraniums we grew last year in 5 litre paint tins were noticeably
superior to those grown in plastic or terra cotta pots.
I wonder whether this is to do with being metal or the fact that they
are straight sided and present less area at the top for evaporation.
Anyone got any thoughts?



Possibly the extra heat conducted by the metal stimulated extra root
growth.

--
David J. Bockman, Fairfax, VA (USDA Hardiness Zone 7)
email:
http://beyondgardening.com/Albums

Possibly the extra heat conducted by the metal stimulated extra root
growth.
Or maybe they like the faster cooling at night. They certainly need
less watering, so I'm sure it's something to do with moisture
retention.
I'm going to try a straight sided plastic container this year to see if
it's the shape that makes the difference.