Purple Diesel produces effects that are similar to traditional sativas in that it is said to deliver an energizing, uplifting rush. This strain, bred by Cali Connection, is a cross between Pre-98 Bubba Kush and Sour Diesel and takes a while to kick in. This effect makes it a favorite among daytime users. Purple diesel has a sour, fuel-like aroma. Itâ€™s purple throughout with large flowers, frosty appearance and is grown without pesticides.