Why do my sweet peas not flower?

My sweet peas have healthy leaves and are six foot tall. But some of the plants produce stems with no flower heads on them.

Why do my sweet peas not flower?
Are you 100% sure that they haven't flowered? For awhile I was having that same problem with my lillies. Only to find out that deer were coming by at night and eating everything in site!! I've tried a couple of things to keep the deer away. I've sprinkled hair (yes hair! A friend told me that one) and i've had my dad pee around my garden. The deer smell the meat eater and they stay away. I'm not sure if this could be your problem but its worth a shot!
Reply:Stems on sweet peas can grow even taller than 6ft, mine do!





It still a little early, dont panic they will flower with next couple of weeks.





You may know but you can also buy an ever lasting sweet pea plant. Ive got a few. Had them 20 yers and they come back every year. Check out your local garden centre or nursery.
Reply:perhaps you didn't sow the seed early enough about December in a green house or the weather has been against you give them more time.Did you dig in plenty of compost into the ground before planting out?. My sweet peas are not flowering yet,either but my garden peas are about to flower.


You are not alone.
Reply:Stop feeding them, flowers are a response, (to reproduce because conditions aren't perfect).





Too much nitrogen in the soil is your problem.
Reply:The only thing I know about sweet peas is that they need good long root space.





Did you double dig the ground before you planted them?
Reply:if they are 6 ft dont think you will get a flower show now .you might have had a duff pkt of seeds