Hybrids vs Heirloom Plants

When it comes to gardening there are two types of plants - hybrids and heirloom.  In order to understand the difference, you need to know a bit of basic genetics.  An heirloom plant is one that has not been modified other than by nature.  It breeds true  meaning if you collect seeds from the plant, the resulting plants from the seeds will be the same as the parent plant (P).  An hybrid is the