help!!!

[srhksr]

i saw this form and thought id use it to describe my problem!


-my plants r outdoor
-im using all organic soil
-Soil type/brand is expert gardener organic mix
-ive added a little extra perlite and peat moss to provide good aeration along with water retention
-never had a ph problem so i never check my Soil pH
-Water source-i use rain water and the occasional r/o water when i get to use the system
-Water pH- the rain water s usually right at 6.7
-Age of plant-flowering for 9 weeks now
-Type of fertilizer-foxfarm organic fertilizer
-Rate of application-2 to 3 tbs per gallon every other watering
-Lighting source and distance from plant-SUN and very far!
-Temperature (both day and night if you are running a dark period)-max of 90 in day and low of 55-60 t night
-% Relative humidity-between 10-40%
-Lighting schedule-outdoor

ok well my problem is all my plants r fine exept one and all its leaves have turned yellow and sartng brown and it is nowhere near done flowering. has the sativa appearance but it came out of a mix s not sue of strain. smells very skunky tho. any hep would be appreciated. thanks