In each pack there is a variety of tough environmentaly resistant strains - Northern Lights Automatic, Royal Bluematic, Royal Moby and Power Flower. The two Autoflower strains will be easily noticeable from the colour of their buds, which should show tints of blue. The Royal Bluematic is the shortest plant amongst the bunch, growing under 1 metre, whereas Northern Lights Automatic will grow over 1 metre. Both Autoflowers will begin flowering before the other normal plants; this should be the most noticeable difference between these plants. Royal Moby is one of the largest plants and will grow up to 3 metres outdoors. Power Flower is an average-sized plant growing to about 1.5 metres tall.