Symphytum 'Moorland Heather' is a cultivar of comfrey in the borage family, Boraginaceae, that flowers in spring. As a Symphytum, it belongs to a group of plants native to northern temperate Europe and Asia and widely grown beyond their original range. Its flowering season is April to June, a useful window for early pollinator activity. Several Symphytum species and hybrids are commonly used in gardens and traditional herbal preparations.

Symphytum 'Moorland Heather' is a comfrey cultivar that flowers April to June and belongs to the Boraginaceae family.

Symphytum 'Moorland Heather'

Comfrey | Symphytum 'Moorland Heather'

Symphytum caucasicum is a perennial herb in the Boraginaceae grown for its spring flowers and ground-covering habit. It flowers April to June and favours moist, loamy, well-drained soils. Tolerant of partial shade to full sun and hardy in UK conditions (H5). Wear gloves when handling and avoid planting where animals may graze repeatedly.

Caucasian comfrey (Symphytum caucasicum) is a perennial herb that flowers April to June and suits moist, loamy soils in partial shade or sun.

https://en.wikipedia.org/wiki/Symphytum_caucasicum

Symphytum is a genus of flowering plants in the borage family, Boraginaceae, known by the common name comfrey.

Symphytum caucasicum

Caucasian comfrey | Symphytum caucasicum

Symphytum grandiflorum 'Variegatum' is a perennial ground cover from the Caucasus that suits consistently shady sites and reaches about 0.4 m. It favours moist but well-drained sandy, loamy or clay soils and tolerates deep shade. Fully hardy in UK gardens (H7), it flowers in the UK from April to June. Plant where a low, spreading cover is wanted beneath trees or along shaded borders.

Symphytum grandiflorum 'Variegatum' is a shade-tolerant ground cover perennial reaching 0.4 m that flowers in the UK from April to June.

https://en.wikipedia.org/wiki/Symphytum_grandiflorum

Symphytum grandiflorum 'Variegatum'

Creeping Comfrey | Symphytum grandiflorum 'Variegatum'

Symphytum rubrum of gardens is a perennial herb in the Boraginaceae grown for its concentrated bloom from April to June. It belongs to the genus Symphytum and originates from Europe. Plants suit moist, loamy, neutral to alkaline soils and will tolerate full sun or partial shade. Handle with care: repeated ingestion is harmful and gloves are recommended when working with the foliage.

Comfrey 'Rubrum' (Symphytum rubrum of gardens) is a perennial herb flowering April to June suited to moist, neutral to alkaline loamy soils in sun or.

Symphytum rubrum of gardens

Comfrey 'Rubrum' | Symphytum rubrum of gardens

Symphytum × uplandicum is a perennial herb grown principally for ground cover and as a green manure and compost activator. It tolerates full sun to partial shade and suits loamy, sandy or clay soils that are neutral to alkaline and remain moist yet well-drained. In the UK it flowers from April to June. Wear gloves and other protective equipment when handling as it is harmful if eaten repeatedly and can affect pets.

Russian comfrey is a perennial herb used as ground cover, green manure and a compost activator, flowering April to June.

https://en.wikipedia.org/wiki/Symphytum_%C3%97_uplandicum

Symphytum × uplandicum

Russian comfrey | Symphytum × uplandicum

Symphytum × uplandicum 'Variegatum' is a perennial herb in the borage family notable for its variegated foliage. It flowers in the UK from April to June. Plants prefer moist, loamy, well-drained soil with a neutral to alkaline pH and will tolerate full sun or partial shade. The leaves contain pyrrolizidine alkaloids and are toxic if ingested, so avoid use where children or livestock might feed.

Variegated Comfrey Symphytum × uplandicum 'Variegatum' is a variegated perennial herb for moist, neutral to alkaline soils in sun or part shade.