Forum home Fruit & veg



Has anyone grown celeriac before or regulary and have any tips on gaining a successful crop?

I've tried growing it for the first time this year and found that although I have some very healthy looking plants, I'm not seeing any real swelling of the root itself! They're still only the size of a small tennis ball.

Apart from Celeriac i've also had problems with beetroot this year with regards to swelling of the roots or lack of as i have found! Everything else is growing great though carrots are a fantastic success and the parsnips are expanding rapidly at the crown, although length wise I wont know till lifting time!




  • SwissSueSwissSue Posts: 1,447

    Hi, re celeriac. They need lots of water and potash based fertilizer. It is not advisable to grow them near carrots, fennel, parsnips or parsley. Do not harvest before end October.When the tuber has reached the size of a walnut, remove so much earth around the tuber so as to expose the upper roots. The development of the tubers is stimulated by the drying up of the upper roots.

    Can't help you with the beetroot I'm afraid. I grew them once and they were all bitter, so never tried again!

  • ItalophileItalophile Posts: 1,730

    Celeriac's origins are marsh-based. They want lots of water and sun and need a long growing season. Removing the outer foliage growth, leaving a core of foliage in the centre, will direct the plant's energy to tuber growth rather than foliage growth.

    Conversely, beetroot doesn't need a lot of water. Just lots of sun and enough space between the plants to give the the beetroot room to develop.

  • granmagranma Posts: 1,913

    Yes , lots of water for the roots to swell , it may not be too late try drowning them at regular intervals - you know what i mean -n a bit like our  summers we had before this one!

  • Zoomer44Zoomer44 Posts: 3,212

    I'm also growing Celeriac, 2nd yr for me, not to successful last yr, the plants didn't get watered regularly and bolted. This yr they are looking good, will remove the outer leaves, uncover more of the root and carry on with the watering.

    I was growing Celeriac as an over winter veg, can some be left in the ground and picked later?

  • ItalophileItalophile Posts: 1,730

    I tried overwintering a few years ago when I was growing celeriac. (I gave up simply because it gets too hot here in summer for it) They survived the winter with plenty of protection from the cold but bolted pretty quickly as soon some warmth arrived.

  • Zoomer44Zoomer44 Posts: 3,212

    Italophile. I planted mine out late..ish but started them off in hopes they will be ready to harvest late October. I was thinking will they store in the ground to be picked through the winter if not how is the best way to store them.

    On the topic of over winter vegs...silly Q...but is there any veg which can grown to be left in the veg bed and then picked over winter.

  • ItalophileItalophile Posts: 1,730

    You should be able to store them the same way you'd store any root veg - kept cool in a box of damp (not wet) sand or similar.

    I keep silver beet going through winter under a small tent of fleece. About the best green for the winter is Cavolo Nero (or Black Tuscan Cabbage or sundry other names). I grow it through the winter without covering it. Even snow doesn't bother it.

  • Thanks for all the replies, I've moved the soil away from round the sides and started a more thorough watering regime see if that produces any results!

  • Zoomer44Zoomer44 Posts: 3,212

    Will look out for CN seeds for next year.

  • WelshonionWelshonion Posts: 3,114

    To be honest, I think it's a crop that is best left to the professional.  If they are still small now, there's not much time for them to grow much bigger.

Sign In or Register to comment.