Hi all, I am planting about 10 various varieties of chiles such as anahiem, poblano, etc. this year and was wondering the optimal spacing in the garden for best production? I plant in raised beds about 4 feet wide in good loamy soil. What would you recommend for center to center planting? I have been using about 16 inches between plants, but read somewhere 12 inches was satisfactory. The seed packets generally say 18". And do you all mulch your plants? Thanks, Janet