However, "C. ruderalis"' early, plant-age triggered "autoflowering" characteristic (which offers some agricultural advantages over the photoperiodic flowering varieties) as well as its reputed resistance to insect and disease pressures makes it attractive to plant breeders. "C. indica" strains are frequently cross-bred with "C. ruderalis" to produce autoflowering plants with high THC content, improved hardiness and reduced height. One strain, identified in 1960, is "Cannabis x intersita" Sojak which is a cross between "C. sativa" and "C. ruderalis". Attempts to produce a "Cannabis" strain with a shorter growing season are another application of cultivating "C. ruderalis". "C. ruderalis" when crossed with "sativa" and "indica" strains produces a plant which flowers automatically and is fully mature in 10 weeks.