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18/08/2012 at 15:36

I have a problem with my dahlia's grown from seed.  60% of them did not flower but produced a pointy seed head and then turned black or one leaf came out.  Such a shame as the ones that came out were lovely.  Could anyone help me please.  Tried to upload a picture but afraid couldn't.

18/08/2012 at 15:53

That sounds odd-but it has been a funny year weatherwise-there is not much you can do-just snip off the offending material-with a bit of luck the next shoot will flower

18/08/2012 at 16:02

It has been a miserable year to grow from seed,  what variety are they and how tall were they when they produced the pointy seed head?

Use the green tree to upload photos.

18/08/2012 at 16:15


18/08/2012 at 16:17

Thank you so much for your replies.  All the dahlia's in the picture will not flower.  I have so many.  I'm afraid it's not just this year that it's happened it happened last year as well.  Wonder if its some sort of disease or bug that gets to them.  They only grow about 24".  It seems that the smaller ones are more prone than the 36" ones.

18/08/2012 at 16:39

looks like finished flower heads from the picture. just cut them off, keep the plants well watered and give it liquid feed once a week and u should get flowers till the first frost. good luck.

18/08/2012 at 16:51

I have to agree they look like finished flower buds, I have to dead head my dahlias regularly  to make them produce more flowers.

18/08/2012 at 17:05

Thanks again.  I have tried dead heading and I don't get any more buds.  I don't get any flowers to begin with just these.  If I dead head all there would be left would be leaves ha ha.  Yes It does look as though they have already flowered - I wish!! Wonder if Monty Don would know.

18/08/2012 at 18:12

Some seed varieties dont perform as well as the pretty pictures on the packet would indicate-what are these?-if it is something like large flower or cactus mixed I grew some of these years ago expecting something fantastic and was sorely disappointed

Dwarf Unwins mixed seem ok but for best results it is worth investing in some named tubers

18/08/2012 at 18:16

Veronica3 there is no direct contact between this forum and Monty. If you want him to answer your question you can try emailing him

18/08/2012 at 18:19

I have three Bishop of Llandaff plants that look no where near being ready to flower, does anyone know what I've done wrong or is it the weather? They've been grown from tubers in late spring, started to grow well but a couple of months ago stopped growing and haven't done anything much since.

18/08/2012 at 19:21

Leggi-when you say nothing since-is there no signs of buds at all/

18/08/2012 at 19:35

Leggi I do not know if this helps but my Arabian dahlias have been flowering for weeks but the Bishops planted next to them are only just producing a bud.

18/08/2012 at 19:35

Nope, no sign of any buds coming up at all, not even little ones lurking in the foliage.

18/08/2012 at 19:52

I think you are just going to have to live in hope-if they dried out at any time that would slow them down

18/08/2012 at 20:10

That's what I think too Geoff, they've had regular watering, but I think I'll give them a feed and move them to the top of my coldframe. The extra warmth there might spring them in to life.

It's a shame because they're such lovely plants when in flower.

18/08/2012 at 21:25
Veronica.3. When you say you dead headed dd you just take off the finished flower heads? You need to cut back to new shoots further back to initiate further flowers. You obviously had quite a few flowers judging by your photo. I cut bak my dahlias regularly during the season...if I didn't Do this My plants would stop producing flowers. No slugs or snails lurking?
19/08/2012 at 16:52

christopher2.  Oh no I just literally dead headed and didn't cut back to new shoots.  I had 50 or so buds on my dahlia and only about 3 flowered the rest looked like spent flowers.  Oh yes slugs and snails lurking everywhere.  Thanks for this I will cut back to new shoots in future. 

19/08/2012 at 18:17
....And look out for slugs n snails. How about going out when dark with torch and salt water in dish,and pick them off? You will get your flowers then
21/08/2012 at 09:42

christopher 2.  Thanks for this advice.  I had a reply back from Craig Loan of Gardeners World and he has solved the problem.  Please see attached picture.  It's the earwigs after all.  Little devils.  Even when the flowers do try to emerge there are only a couple of petals on them.


1 to 20 of 25 messages