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Guide to Growing Carrots

This is what my carrots looked like this year: riddled with tracks from the disgusting, putrid, foul, menacing carrot rust fly. Those little buggers can sniff out a carrot with superhero powers so I planted carefully and didn’t have to thin them (thinning releases the smell and attracts the flies), but the females still found my carrot patch, laid eggs, and a week later the larva fed on the hidden roots. There’s nothing worse than lovingly growing a patch of beautiful carrots only to have them eaten up by unwelcome guests. Bummer.

Guide to Growing Carrots

However, there are steps you can take to prevent disease and pests from interfering when growing carrots. The suggestions out there to avoid damage range from scientific to witchcraft, so trial and error is your best bet. Here are a few suggestions for keeping your carrots healthy once they’re planted.

  • 1. Cover your crop with a lightweight, permeable row cover that will let both light and water in, but keep flies out.
  • 2. Rotate your crop as a good practice for all veggie gardening to reduce instance of disease, pests and nutrient depletion.
  • 3. Plant a fly-resistant variety like Fly Away which they don’t like that much. Then plant another patch farther away of bait carrots that they will hopefully choose instead.

Of course, the better start that carrots have, the more likely they are to stay healthy as they mature. Try these tips for growing carrots for the best results:

  • Plant carrot seeds in fertile, well-drained soil that has been sifted to remove any stones or hard debris that will obstruct the root growth (and make funny shaped veggies).
  • Sow seeds according to the plant depth and spacing as recommended on the seed packet for each variety.
  • Carrot seeds are quite small, so it will be necessary to thin out your plants when they grow. You can do this by cutting (not pulling) out the seedlings that are the weakest, leaving the strongest lots of room to grow a yummy root.
  • Keep seeds moist while they germinate. Once sprouted, make sure they get lots of sun (eight hours per day) and water (don’t let them dry out on hot days). As they grow they will push up their shoulders from the ground so mound soil around them periodically.
  • Plant carrots in spring and summer for a fall harvest or plant over-wintering varieties in late summer for a winter harvest.


  1. I’m trying some of those herloom purple carrots this year myself, and some yellow ones. Damn! hope I don’t end up with those flies!
    This post looks to be pretty informative thanks to all the comments. I’ll follow them in the morning while sipping a cup of tea.

    • Ron, you’re welcome. I found it very helpful too. This year I have some nematodes, a floating row cover, and a new spot for the carrots. Wish me luck (and best of luck to you too).

  2. Hello- Just found your website thru Pinterest (regarding starting seeds) & really enjoying reading! I grew carrots for the 1st time last year & it was successful. I hope this year I won’t have to deal with these lil buggers. I read (& cannot recall where) that the flies don’t fly above 18″ or so….. I use a raised bed system, my carrots are only about 12″ above ground, so we’ll see. Buy an idea anyway to try- at least a tall raised bed would be beneficial for deep root crops anyway! Good luck~ Lisa

    • Hi Lisa, I haven’t heard of low flying flies so not sure about that. My carrots were in raised beds when they got them though so in practice, at least for me, it’s not the right solution. So glad that you have great luck with your carrots and thanks for stopping by! Isn’t pinterest great!?


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