Hardening off seedlings - queries about some that I have

Discussion in 'General Gardening Discussion' started by TheMadHedger, May 4, 2016.

  1. TheMadHedger

    TheMadHedger Gardener

    Joined:
    Feb 4, 2008
    Messages:
    706
    Location:
    Wales
    Ratings:
    +254
    I have a few seedlings on the go right now, indoors, in trays with individual cells.

    They are: Cosmos, Cornflower and Nasturtium.

    Both the Cosmos and Cornflower are just developing their first proper set of leaves (besides the cotyledons) and most of the Nasturtiums have been on their first set of leaves for about a week or two now with the second set developing.

    When should I start to leave these out for the day to harden them off, and how long should I harden them off for before planting in the garden?

    Thanks
     
    TheMadHedger, May 4, 2016
    #1 Quote in Conversation
  2. JWK

    JWK Gardener Staff Member

    Joined:
    Jun 3, 2008
    Messages:
    34,069
    Gender:
    Male
    Location:
    Surrey
    Ratings:
    +54,127
    I'm putting mine outdoors all day at the moment because there is much better light than leaving them on a windowsill. Mine are at the same stage as yours, some have their first true leaves. It's as much about getting them bigger as well as hardening them off before planting out. I would wait till they have 3 or 4 sets of true leaves and all chance of frost has gone before planting out.
     
    JWK, May 4, 2016
    #2 Quote in Conversation
  3. TheMadHedger

    TheMadHedger Gardener

    Joined:
    Feb 4, 2008
    Messages:
    706
    Location:
    Wales
    Ratings:
    +254
    Many thanks for the tips. :)
     
    TheMadHedger, May 4, 2016
    #3 Quote in Conversation
Loading...
Similar Threads - Hardening off seedlings
  1. James Benstead6

    hardening off in greehouse

    James Benstead6, Mar 16, 2023, in forum: Greenhouse Growing
    Replies:
    4
    Views:
    1,834
    Upsydaisy
    Mar 17, 2023
  2. daisybelle

    Hardening off?

    daisybelle, May 26, 2018, in forum: General Gardening Discussion
    Replies:
    4
    Views:
    681
    daisybelle
    May 31, 2018
  3. Outlander

    Hardening off marginal pond plants?

    Outlander, Mar 24, 2018, in forum: Water Gardening
    Replies:
    9
    Views:
    1,268
    Outlander
    May 23, 2018
  4. Fern4

    After hardening off.

    Fern4, May 15, 2013, in forum: General Gardening Discussion
    Replies:
    4
    Views:
    707
    Fern4
    May 16, 2013
  5. rustyroots

    Hardening off.

    rustyroots, Apr 6, 2013, in forum: Propagation This Month
    Replies:
    6
    Views:
    917
    Spruce
    Apr 6, 2013

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice