Some fertilizers have sufate in them.
In general you should use ferts that have micronutrients in them too, and you won't get micronutrient def unless there's a pH problem.
But that plant actually looks pretty healthy. Just keep your roots a little cooler and water less and yopu should be fine.
stinkyattic Reviewed by stinkyattic on . Swiss Alpine Rocket Advice (with pics) Hey Everyone, I live in Lausanne, Switzerland and my friend just left the country and gave me his plant. He bought the plant in a store about 3 weeks ago (in Switzerland it is legal to have up to 3 plants) and had it in a field for a while. Now the plant is in a pot on my porch. It gets about 12 hours of direct sunlight every day (too much?) and I water it every night (too often?). I have not used any sort of fertilizer or anything like that. In the beginning my friend had the bottom 3 Rating: 5