Summary: New to gardening (3 years). Small garden so space very limited. 1st year - grew up one line of canes in front of border fence - grew to about 7ft, good weather that year, lots of blooms. 2nd Year - used 8' canes in a line (no room for any other type of support). Peas grew to top of canes and wouldn't stop growing so the tops were hanging down. Rained for weeks and weeks, hardly any blooms and were so high up not easily accessible and looked a mess.
This year, I have sweet peas planted in original position with a line of canes supporting mesh, but also some planted around a small obelisk (5ft) and a few in a tub with a thin tall trellis behind the tub.
My question is - I would love my sweet peas to do their own thing, look natural (rather than straight up to the top of the canes). I've never managed to get them to look that lovely bushy way they look in photographs with lots of blooms at eye level or lower. Is it possible, once they've reached the top of the canes or obelisk, to just chop the highest point of the main stem and stop them growing taller - or will this cut-off the bloom potential completely?
Sorry this is such an ignorant question. Most people seem to be so experienced with sweet peas or find them easy. I'd love mine for once to look more bushy and not so tall and slim.
The ones I have growing just now are Cupani, a Spencer mix and and an Old Fashioned Mix and probably some leftovers from last year of a Help for Heroes Mix .
Would love advice on this. Thanks.