Gdp is 100% indica which meens it wont be a very tall plant; ive grown it myself and seen it grown in and outdoors.. Flowering wise my certain cut called Kens Gdp that I got at Harborside was one of the fastest flowering plants ive ever grown I saw bud development a week in easily! hope that helped good luck
I vegged mine for a month after i got them when they were about 3in clones gdp will only grow about 4ins more once you start flowering them