16 Sep 20 Michelle Tanner (New Zealand - temperate climate)
I grew wonderful celeriac in Kent,UK on limestone soil but here in the Waikato I have much less success. If they grow at all they are much smaller (golf to tennis ball rather than the small football sized ones from before). I am going to give it one last go this year, trying a variety of sizes and will feed and water like mad!
Buy a cheap pH tester. If you have heavy soil, lighten it up a bit with sand or compost. Start with with good rich soil and MAYBE a light fert when plants are 8 weeks old. DON
The answer might be in your soil. It would be worth testing to see how acid it is . Most NZ soils tend towards acidity. Your limestone soil in Kent was more alkaline than acid.
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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. Gardenate is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
We cannot help if you are overrun by giant slugs.