what strains?
Nah the ladies are normal looking.. the yellow is gonna happen as the plants produce flowers the fan leaves are gonna use up less energy and die.
Tho the color is too light green for my liking... but that could be the pic..
Also that Horsetail ya have in the back looks great too.. it grows wild here and I was told that the Hispanic community uses this as antioxident and diuretic ..
also very good source of ....
Silicic acids and silicates, Potassium, Sulphur, Manganese, Magnesium; Flavonoids: Quercetin glycosides; Phenolic acids, Alkaloids, Equisetonin, Phytosterols: Cholesterol, Isofucosterol, Campesterol; Tannins.
http://botanical.com/botanical/mgmh/h/hortai39.html