We decided in June that it could be fun to try to grow some weed. So we got on the net and bought a feminized seed. We planted it in it's definitive pot, as advised by the seed seller. We planted it in a 16" pot, filled with a mix of store bought black earth, potting mix and sheep compost. It's been now about 5 to 6 weeks and the plant is almost 2' high.

Unfortunately, about a week ago, we started to see some tiny whitish discolored spots on the leaves, especially the ones at the base. We thought it was spider mites and started to spray the plant with a mix of 1 tbsp of natural dishwashing soap diluted into 1 gallon of water. We sprayed it daily for a week. the plant seemed to do better each day. The we fertilized it a bit with natural seaweed fertilizer (Acadie brand).

Two days after, the plant now have several brown spots and the tips of leaves are curling.

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Here are a bit more info on the plant:

Indoor/outdoor: Plant grown mostly outdoor (we put it under the sun during the day and bring it back inside at night)
Water: Mostly well water (with water softner), and sometimes we leave it under the rain outdoor
pH: I didn't ran any pH tests
Plant age: between 5 to 6 weeks
Type of fertilizer: Acadie seaweed fertilizer, diluted at 1 tbsp per gallon
Rate of application: every 2 weeks
Lighting source: natural sun, on the South facing side of the house
Air temperature: between 68F to 85F (with an average of 76F)
Air humidity: outside air has been quite humid I guess...
Lighting schedule: Outside, under the sun, from about 8 AM to 6 PM
northern_newbie Reviewed by northern_newbie on . Eutrophication, nutrient deficiency or spider mites? We decided in June that it could be fun to try to grow some weed. So we got on the net and bought a feminized seed. We planted it in it's definitive pot, as advised by the seed seller. We planted it in a 16" pot, filled with a mix of store bought black earth, potting mix and sheep compost. It's been now about 5 to 6 weeks and the plant is almost 2' high. Unfortunately, about a week ago, we started to see some tiny whitish discolored spots on the leaves, especially the ones at the base. Rating: 5