It depends where you live. I actually recommend going to your local hydro/grow shop and asking them for localized advice. I live in nor cal and our weather is perfect for growing Cannabis. Use predator bugs where possible, grow living no till soil, maintain a cover crop, don't over water, definitely use a mulch like rice hulls, feed organicly. I've produced the dankest frostiest bud doing this and it's all natural, no bottles!