Tomato leaf turning purple

[SharonRossy]

Hi, I know I saw this somewhere but I just noticed on my Japanese blk trifele purple on the outer edges and some purple on the leaves. It's still producing fruit and looks healthy. What to do?
Sharon

[gourmetgardener]

You're starting with phosphorus deficiency. Time to nip it in the bud before plant vigour hits river bottom, and the fruits end up being rather sour instead of sweet. Try 10-52-10 or something with a high middle number - the new leaves should be a nice healthy green within a week.

[kurt]

http://www.tomatoville.com/showthread.php?t=24388 This is what you might have readabout a week ago

[SharonRossy]

Going to get something tomorrow to stop it before it gets worse. I happen to love this tomato! Thanks guys!

[zipcode]

When dealing with deficiencies and the likes I think best way is to use foliar spray. Very often the deficiency is caused by a problem with absorbing the nutrients from soil due to bad pH, other excess minerals, etc. Using foliar you bypass the soil, and the effects are much faster.

[SharonRossy]

Okay zipcode, thanks, I'm off to the gardening store today to get something. So far it's the only plant that shows signs. I have been really careful about fertilizing, but who knows? It's been an very hot summer...