f2 hybrids are a cross between two f1 hybrids, and are not considered stable.

Definition as written by Terry:
The second filial generation; hybrids resulting from self-pollination within a population of F1 hybrid plants - they will not come true to form.

Definition as written by Margiempv:
Second generation resulting from self-pollinating or sib-crossing the F1 seedlings.

Definition as written by Magpye:
This is the product of two F1 plants that have been crossed. This is considered the second generation. This will not necessarily produce a great plant.
babystarbud Reviewed by babystarbud on . Which strains grow true? Correct me if I'm wrong, but my understanding is that hybrids will not produce seeds that grow true to the parent. In order to produce more of the hybrid seeds you have to cross-pollinate the strains it came from all over again. How can I find out which strains are stable and do grow true? Are they even for sale anywhere, or do the seedbanks only sell hybrids? Rating: 5