Cannabis seeds come in different shapes and sizes, but there are some similarities between the many strains of marijuana seeds. Even if you grow it outdoors, it won t get much bigger and will usually keep between 50 90cm. Hello Yellow is a variety with bright yellow flowers.  Source: <a href=http://www.3dcomenius.com/cannabis-chronicles-the-seed-buying-saga/>http://www.3dcomenius.com/cannabis-chronicles-the-seed-buying-saga/</a>