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Why my Penstemon isn't Flowering?

pinkskyinthecitypinkskyinthecity Nottinghamshire, England Posts: 37
in Plants
It has grown with lush foilage at up to 4' tall but no flower buds. It appears that I may have too rich a soil for it (as discussed with a recent issue with another plant query on here). I think it's a 'Burgundy' and has been growing in my flower bed for at least 5 years. I did have 'Sour Grapes' flowering earlier in the season so I'm a bit confused why the 'Burgundy' hasn't flowered. It has thrived a great deal compared to last year's growth. 

Posts

  • punkdocpunkdoc Sheffield, Derbyshire border.Posts: 8,546
    They are happy in a rich soil, so it won't be that.
    Do you chop them back in Spring?
    Did they tear it out with talons of steel
    And give you a shot, so that you wouldn't feel?
    And washed it away as if it wasn't real?
  • pinkskyinthecitypinkskyinthecity Nottinghamshire, England Posts: 37
    They get cut down in I winter after flowering usually.
  • Hilary_15Hilary_15 Posts: 28
    I have the same problem!
  • LynLyn DevonPosts: 16,567
    Wait until the new growth shows in the spring then cut right back. 

    Gardening on the wild, windy west side of Dartmoor. 

  • BenCottoBenCotto RutlandPosts: 1,866
    The advice I read the other day was to cut back by about a third now and a further third in Spring - not that I’ve done mine yet.
  • BijdezeeBijdezee BPosts: 1,316
    I always leave mine all winter then cut them back to the new growth at the bottom in April. It seems to work. 
    OP - I wonder if cutting them back in autumn is a bit early and maki g them put out more vegetative growth instead of flowering? Just a thought. 


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