(Courtesy Brion Sprinsock) Dahlia sherffii. One of the natural Dahlia species, native to Mexico. (Courtesy Steve Law via Wikimedia Commons.) Species Dahlia compared with a modern informal ...

Start small, conduct a soil test, and adjust again if necessary. The more compact Dahlia species are ideal for growing in pots. But to ensure they thrive, adding regular gardening soil to the pot ...

The collection, which is accredited by Plant Heritage, safeguards dahlia species and currently has more than 1,700 varieties. Re-planting hundreds of blooms was a mission for the pair but now ...