Downy mildew is a fungal disease that can attack basil plants and make the leaves turn black and sooty and can affect the yield and health of the plant., To avoid this problem, grow basil varieties 7 vegetables that MUST grow together in the same bed Plant these combos and watch pest problems vanish . Strategic companion planting reduces pest damage by 60 80% while improving yields through A fern is a flowerless, vascular plant with feathery green leaves (fronds) that reproduces via spores, commonly found in moist, shady, or forest environments. It is a popular, decorative plant often used 6 EASY Plants (assorted Starter Pack) Live Aquarium Plants Etsy What is the Key to Native Plant Happiness? Dyck Arboretum