Forum home Plants
This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.

Dahlia - getting very big - when can it go outside?

2

Posts

  • FairygirlFairygirl Posts: 55,117
    It's certainly very big for the time of year. The one I bought last year is about 7 or 8 inches. 
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • thevictorianthevictorian Posts: 1,279
    I started three new ones in march (I've grown 25 different ones this year because my mum loves them and I cut them for her) and they got to two foot high before I even noticed them. The others, overwintered, are just about poking out from the compost after going in much later. With the new ones I cut them back to the first pair of proper leaves to make them more bushy. If you really wanted you could, and it will look drastic, do the same and encourage more flowers in the year, or try the good advice already mentioned.
  • FireFire Posts: 19,096
    Mine are just poking out of the pots. I should think the dahlias will be ok outside if the night temps don't go below 5oC.
  • @punkdoc
    oh darn it - I didn't even realise there was such a thing as "starting it too early". Do you think it's doomed to be an indoor plant? 
    Growing a pink garden, one plant at a time....
  • FairygirlFairygirl Posts: 55,117
    Don't worry. You'll be able to get it outside.  :)
    You can put it out for a good few hours on nice days now. Mine has been going out for a while on the warmer days, sheltered from the wind. 
    Gradually increase the amount, and then when there's no bad weather in your forecast, you'll be able to leave it out. 
    You can certainly do as @thevictorian says too - and pinch the tops out to get a bushier plant. It may look a bit drastic, but it won't affect it - it'll help it  :)
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • AthelasAthelas Posts: 946
    edited April 2022
    I found this video useful to understand ’pinching out’ for dahlias

    https://youtu.be/yzYps7X4vSw
    Cambridgeshire, UK
  • @Fairygirl
    thank you for that. Unfortunately I don't really have anywhere sheltered as such, so next to a wall is going to be the best I can do. 
    I'll start hardening off though, thanks again :) 
    Growing a pink garden, one plant at a time....
  • @Athelas
    oh wow! She cuts of the main stem! Never thought that'd help the plant... If you look at my picture, I don't appear to have a centre stem as such....??
    Growing a pink garden, one plant at a time....
  • AthelasAthelas Posts: 946
    Yes that’s true — if it was me I would cut off those two ‘main’ stems to get a bushier plant.

    I just did this on my dahlia (‘Cornel’), which also has two stems. I must admit I started it in mid March, but it should be warm enough in Cambridgeshire soon.


    Cambridgeshire, UK
  • Nanny BeachNanny Beach Posts: 8,719
    I would put it in your cold frame lid up because of the size,and put fleece and bubble wrap over it
     The baby green leaves are at risk from frost. As a rule of thumb, nothing tender goes out until night temperature is in double figures, even then, outside for a week in the days only. 
Sign In or Register to comment.