I live in So Cal - Orange - and will be moving to Montana in 5+ years so since I was late b- no very late in getting my fall crop in (death in family) some plants were leggey - neglected etc - instead of just tossing them I decided for the next few years to try some of these recommended cooler weather varieties to see which might be better for Montana - I have not done anything since the initial plantings - and in Dec we had a few days of frost - even ice formed on the grass so I thought I might just loose them all - then we got the heatwave that came through - lost some plants and quite a few survived - blossums still appearing and didn't get as much blossum drop as expected and have gotton quite a few tomatoes started a few have 15+ fruit - I am just gonna take notes on the varieties that do the best and maybe give them a dose of dr earth organic tomato fertilizer - possible fish/kelp emulsion feed to ground and maybe a leaf wash to help build the leave thickness - what variety do you have - since you are in a warmer climate zone I would just let it ride also - maybe cover at night when supposed to get any chance of frost or every night so blossum temp might be closer to ideal setting temps

gardener,

It depends so much on your micro-climate and wind protection. I have a protected area facing South, against my house wall. I am in San Jose, CA. area and am still harvesting tomatoes today.

Here is a photo taken today of my Purple Haze. The plant's leaves got hit about 2 weeks ago from an overnight frost, but the tomatoes keep producing and ripening:

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Any year I am able to get ripe tomatoes after Christmas is a bonus for me.

Raybo

yeah my tomatoes that were planted earlier and set fruit before the frost are ripening and still setting fruit and creating blossums - haven't grown the purple haze hybrid - mostly heirlooms - but tempted

Rnewste - thanks for posting the nice photo. Thanks for all of your comments/feedback.
I haven't used any fertilizer, but I appreciate the tips. So far we have just added a heap of compost every now and then, as soil diminishes.