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I've had a bumper greenhouse tomato crop but most stubbornly refuse to ripen. Varieties are Coeue du Boeuf, Manacor and one yellow variety - Sunrise I think . Many of them turn pink with a yellowish hue around the top. Is it possible that the yellow variety has cross pollinated ? Cut them open and they are deliciously red and tasty and quite edible. Some remain stubbornly green and are unlikely to improve now that autumn is with us. Comments and suggestions would be welcome. A friend of mine has a similar problem of non ripening and we both live in the southwest where we have enjoyed a sunny summer.
I've ripened tomatoes with a banana, it does work. Something to do with ethylene given off by ripe fruit - works with a ripe apple as well.
Thanks folks. I've tried the sunny windowsill and the green banana and they work moderately well. I still can't find an explanation for the "yellow" tinge !
I am picking mine as soon as they show the slightest hint of colour and they are ripening, allbeit slowly, in a bowl on the worksurface. They were planted very late (July) outside, grown from the seed saved from a "black" tomato bought last year in the supermarket in France - just wanted to see what it tasted like. They are delicious - must remember to save some seed again.
orange peel in a box or draw will ripen them quickest
We've had a fantastic crop of beefsteaks, oxhearts and others - they've all ripened, bar one - no green tomato chutney to be made here this year - good job we've still got plenty from last year
Tony, if it's consistently warmer inside than outside, take them inside. Temperature dictates ripening. The theory behind bananas, etc, hastening ripening is that they exude ethylene gas which quickens the process.
Those bright red toms in the supermarket that are rock hard and immature inside have been picked green and gassed with ethylene gas. It ripens the skin but doesn't ripen the tom internally. Only time will do that.
As to the yellowish hue around the top of the toms, it will have nothing to do with cross pollination from the yellow variety in this growing season. Cross pollination only manifests in the next generation, the season in which any cross-pollinated seeds are planted.