Forum home Fruit & veg

Sweet corn - solutions for pests?


First post on here! :)

My sweet corn has turned into a haven for pests - two different types of caterpillar (I think) and a black flying bug too (see photos - couldn't capture the flying one). Its also weak and struggling to stay upright.

Is there anything I can do at this stage? I figure spraying anything isnt a good idea given the silks are being pollinated?

Any advice would be helpful - I'm tempted to give up given how much water the corn is using!



  • DovefromaboveDovefromabove Posts: 83,859
    edited July 2022
    Hi @Devrim and welcome to the forum  :)

    Are the caterpillars doing a lot of damage?   It's hard to tell from the photo.

    To be perfectly honest I've never scrutinised my sweetcorn that closely, I just let it all happen and have always had good results.  I find that the birds, wasps, hoverflies etc keep caterpillars down to reasonable numbers on most things (other than brassicas which I net).  

    One year the wind bashed the sweetcorn about a bit so I put a cane at each corner of the block and string between and that stopped the problem.  Would that help yours?

    Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.

  • DevrimDevrim Posts: 12
    Hello and thank you for these encouraging words!

    They're actually not doing too much damage as far as I can tell at this stage. I thought that once the caterpillars got into the ear, they would gobble it all up so there wouldn't be much point continuing to water. But I will keep going and put up some canes for support as you said. I've never grown sweet corn before so it's a steep learning curve!
Sign In or Register to comment.