3 pack contains: Ice, Critical, Bubblegum XL5 pack contains: Ice, Critical, Bubblegum XL, Fruit Spirit, White WidowThe reason Royal Queen selected these strains was due to their differences, making it easier to determine which plant belongs to what strain. The Critical will be a much smaller plant, even half the size of White Widow. Although size of the plant is the most significant factor for discriminating between strains, there is also a difference in flowering time.After 7 weeks of flowering, the Critical plants will be almost finished, if not already done. This will be noticeable not just from the resin content all over the leaves, but also from the actual colour of the resin glands. Upon formation, resin glands are clear, however at one point during the flowering period they will turn cloudy and milky. This change of colour in the resin glands will happen 2 weeks earlier with Critical than with White Widow.All plants are easy to grow, require little maintenance and are suitable for soil or hydro, as well as sea/screen of green operation. Whether you are a first-time grower or experienced, this combination of Critical, ICE, Bubble Gum XL, Fruit Spirit and White Widow will be sure to provide everything you expect from an indoor grow.