Stem Rub For Early Selection

Rubbing a stem between your fingers during veg gives you a rough preview of what a plant might smell like in flower, and the differences between siblings can be striking. It is not reliable enough to cull on alone, but it narrows a large pack down to the ones worth the space. How growers use stem rub alongside structure and node spacing is discussed at https://breederregularseeds.com. Some phenotypes stay silent in veg and only open up in week five.