Garden dahlia

Dahlia pinnata is an accepted species name for this garden dahlia, described by Kew as a tuberous geophyte and a cultigen from Mexico. The species-level account does not assign a single flower color or named cultivar; like other dahlias, it brings seasonal blooms to sunny beds and cutting gardens. The [Kew species account](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30027297-2) establishes the botanical identity, while the [University of Florida guide to Dahlia](https://ask.ifas.ufl.edu/publication/FP169) gives genus-level culture and broad size ranges. ## Maintenance Grow in fertile, well-drained soil with steady moisture and give plants sun; dahlias tolerate some partial shade. Avoid planting tubers in cold, wet ground. Tall stems may need support, and deadheading encourages a longer display. Dahlias are tender in freezing weather, so lift and store tubers in cold-winter regions. The [RHS growing guide](https://www.rhs.org.uk/plants/dahlia/growing-guide/) describes planting, seasonal care, and storage.