Not sure why you are getting advice to fertilize more. Your post says you are fertilizing according to instructions once a week. That is about right...but you do need to "read" your plants. This comes from studying others' info here...and experience. PS diseases live/breed in potting mixes...not just native soils. That is exactly why some folks do not re-use last years' old potting mix.
Last edited by Ed of Somis; August 15, 2016 at 10:52 AM.
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