Which constant failures do you still try?

I've grown Brussels for nine years and only had one decent harvest, but perhaps this will be the year? At least the tops never 'blow'! 

Florence fennel is always sad - we might get enough small heads for one risotto, but we also get swallowtail butterfly caterpillars on them, so they are worth the work & the culinary disappointment.

After buying or being given three rhubarb plants I have to accept my baking clay is never going to be their liking. But if somebody gave me a plant I'd try again!!
 
Is there anything you stubbornly refuse to give up on?

After trying to grow Aubergines many times, and vowing I'd never bother again,, a packet of mixed Aubs arrived - and I couldn't resist having another go.
I may have some success this year - who knows?

As we say in Wales, never say Dai.

Lettuce is usually my failure. A) we don't eat a huge amount of it and B) it usually goes to seed, wilts or gets eaten by slugs. BUT this year I have a bumper crop. Who knows why.

I budget for half my lettuces being slug food or bolting - in the latter case I look at it as just growing compost.
But we are another household of the Trusty Side Salad

I gave up with Aubergines I’ve finally realised I only end up with pretty purple flowers and no fruits. Not given up on carrots I tried for years not getting anything until I started to grow them in buckets. one happy me

Cauliflower!
No idea why I still keep trying. Only one of us in this house likes it and it’s not me   .

CARROTS!!!!!!

Broccoli Raab always a disappointment

Melons... we had our first successful fruiting one last year... had a grand total of 3 mini melons about the size of an apple from them...

I have never....dont laugh.....been able to grow a decent raddish