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Penstemons

Penny19Penny19 Posts: 53
and why won't my penstemons flower???
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  • BijdezeeBijdezee BPosts: 1,484
    I've noticed that some flower earlier, some later. I noticed the 'white bedder' one is quite early. Another one I have, don't know the name if it, is just starting to flower now. Do you know which one you have? 

    The other thing I wondered about is whether you have cut it back it april? That seems to stimulate growth and flowering. A dose of tomato food might help. 

  • Butterfly66Butterfly66 BirminghamPosts: 736
    Mine have been very slow to get going this year. They are flowering now but only started a couple of weeks ago and even now the flowers aren’t as big or as many as usual
     If you have a garden and a library, you have everything you need.”—Marcus Tullius Cicero
  • Pete.8Pete.8 Billericay, EssexPosts: 8,559
    Some of mine ('Garnet' especially) have been in flower since early June and still going strong. The ground is rock hard and they're not even wilting.
    Hidcote Pink has been flowering almost as long, as has Raven.
    White bedder is a bit hit and miss for me for some reason, but has been in flower on and off for a few weeks.

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
  • cornellycornelly Posts: 962
    I pinch the stems when they finish flowering to get repeat flowering's, had a lovely display this year so far.
  • Penny19Penny19 Posts: 53
    Mine have resolutely failed to flower at all, despite feeding and cutting back in spring!!!!!!
  • Valley GardenerValley Gardener Rhondda ValleyPosts: 2,363
    Mine have been disappointing too, they flowered a bit earlier on,I deadheaded expecting more,but nothing. Thinking I might have to get more seed for next year. This is their 3rd year. Are there any bigger leafed ones that can withstand winter? Getting a bit fed up with Garnet and the like.
    The whole truth is an instrument that can only be played by an expert.
  • B3B3 Posts: 21,532
    Mine put on a lot of leaf this year. I wonder if it was the spring weather.
    All mine have flowered, but not as much as last year- I think. Some are quite close together so it's hard to tell.
    In London. Keen but lazy.
  • Butterfly66Butterfly66 BirminghamPosts: 736
    My Raven are just sulking. They look healthy but smaller than usual. I did move them in early April and of course it was so warm and dry right through May. None are flowering as well as usual even Garnet, I think they haven’t liked the up and down weather.
     If you have a garden and a library, you have everything you need.”—Marcus Tullius Cicero
  • Butterfly66Butterfly66 BirminghamPosts: 736
    Does anyone grow Penstemon Dark Towers? Beautiful variety but just doesn’t seem to repeat flower for me?
     If you have a garden and a library, you have everything you need.”—Marcus Tullius Cicero
  • AnniDAnniD Posts: 9,672
    @Valley Gardener, the big leaved varieties are generally considered to be less hardy. If you've got a kitchen windowsill or somewhere similar,  now's the time to take cuttings. I've just done some from my "Geoff Hamilton" ones.
    You may find something here that might suit. 

    https://dorsetperennials.co.uk/comparisons/genus/penstemons-catalogue-varieties/
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