London (change)
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24/11/2011 at 15:27
Loggerd on to find about carrot fly. Found organic and crop rotation.
What about prevention and cure?
24/11/2011 at 15:27
As regards to crop rotation some people seem to grow some crops
on same plot year after year, how do they manage this? I would be very interested to hear comments. Many thanks
24/11/2011 at 15:28
The best solution to prevent carrot fly, which i have found is by putting wind breakers (what you use for camping or the beach ) round your carrot plot , but make sure you hammer the poles right down so not to allow any gap between earth and breaker try this it's the best solution ever.. ( second hand or old wind breakers are perfect.) Make sure there is no gap between joining poles when putting wind breakers together..
24/11/2011 at 15:28
i will try this
thank you
09/12/2011 at 15:55
I found that growing the purple variety of carrot seems resistant to carrot fly. I grew three patches of carrot this past year, and the ordinary common orange carrot was touched by the fly, but the purple type was virtually unscathed.
All this stuff about growing garlic or onions close by has not proved successful here in Northumberland. The best method is, for me, to lay fleece over the seeds and this is the necessary barrier to prevent the fly invading.
09/12/2011 at 16:45

I grow all my carrots in willow planters which are a height of about 18 inches.  I have never had trouble with carrot fly as I think they fly lower to the ground than this.   

18/06/2012 at 22:34
I was told by a market gardener that carrot fly cant fly more than a foot or so high,is this right! any way i have made a plastic fence and put around my carrots, I,ll just have to wait and see.Lu.
19/06/2012 at 06:28

It's true - carrot fly cannot reach above about 18 ins but most important, when thinning or picking carrots try not to disturb the foliage too much and NEVER leave a bit of leaf laying on the ground.  Pick up every scrap and take it far away from the remaining carrots.  The broken foliage gives off a heavy scent which the fly picks up on. 

I put my carrots between tall growing veg like sprouts and haricot vert and take a softly, softly approach to thinning, harvesting and weeding around them.  I also grow a row of marigolds alongside.  So far this seems to work for me.

01/08/2012 at 21:46
Simply grow under fleece. The total answer with no negatives
04/08/2012 at 07:13

This year i planted a row of tagetes then a row of chives either side my carrot plot and so far .....touch wood no fly looks pretty tooo

21/02/2013 at 23:35
Hi,,is there anything that can be used against CLUBROOT,,my books are all really old and the remedies that are in them are all defunct now,,,
21/02/2013 at 23:53
Hi Simmo45, I dont think there is. I had it at the farm and they said the only way to get rid was to remove all the infected soil and replace it. It can last upto 20 years in the soil. I did however see a wee bit on a programme (cant remember where it was) but the guy said he added loads of fresh compost with a mix of lime and sand. He didnt have a problem where as the rest of the allotment had infected soil.
21/02/2013 at 23:54
Oh, sorry. I grow my carrots in pots/tubs. Always had a great harvest and no worms
22/02/2013 at 08:04
Lime was the traditional natural deterrent to club root....Ive never suffered club root but my veg patch is neutral to alkaline. Have you tested your soil Simmo45?
01/03/2013 at 00:26

Hi,thnx for all tips and info,,just getting things ready for new season ,,patch for brassicas all limed and root crop area dug over wth added sand for carrots,,spuds given lots manure,,this place be like a jungle ,,haha,,,yeah ok,,,

10/04/2013 at 22:02

Hi Simmo  have you tried putting a piece of rhubarb under your brassica plants,  about two inches long,pointing up.  this method was given to me by my father.   i have had agreat deal of sucess, but it does not work on all soils.   best of luck  Wuz  

08/12/2013 at 20:59

I read about planting carrots between rows of onion and garlic and it worked - no carrot fly - where as the allotments around me suffered

I have also been told that you can hoe carrots up but not tried this

30/01/2014 at 18:57
I was told by a very respected gardener to water drills for carrots with a solution of 1 gallon of water and 1 capful of household liquid bleach .Soak the drill then sow seed. It does help reduce any "fly" lurking in the soil.
I also cover crop with enviromesh.
28/09/2015 at 23:46
I have a bad infestation of carrot fly larvae in my garden, how can I treat the soil to get rid of them, so that I can grow veg next season. I realise it is a good idea to avoid the carrot family next season.
29/09/2015 at 08:41

Morning Amateur  veg grower.

as soon as germinating takes place and whilst plants are small water with nematodes.  Then cover with fleece.  The former controls carrot fly larvae.  The latter prevents the adult flies from laying their eggs.  This breaks the cycle.  

Not sure about bleach Phillip 

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