Sanguisorba off. 'Red Thunder' is an herbaceous 

 in the rose family (Rosaceae) and a cultivated form of burnet. It produces a 

 of pinnate leaves with erect stems that can reach 50–200 cm, each stem topped by dense, small flower clusters. Individual flowers have four tiny petals and may range from white to red within 5–20 mm long flowerheads. Flowering takes place from June to August.

Sanguisorba off. 'Red Thunder' sits in the genus Sanguisorba within the Rosaceae and traces its lineage to temperate parts of the Northern Hemisphere. Plants form a central crown of pinnate leaves — often 5–30 cm long with multiple serrated leaflets — and send up erect stems that carry dense, 5–20 mm flowerheads. Individual flowers are very small, with four petals that can range from white to red, and flowering runs from June to August. Choose a position where the tall stems can be seen and appreciated; the species' habit suits sites that offer some vertical space rather than tight, low-growing borders. Aim for soil that retains moisture without remaining waterlogged and a situation that receives good light through much of the day. Established crowns can be divided in spring to renew vigour and to create additional plants. In UK planting schemes this cultivar works where upright, long-stemmed summer flowers are wanted — between grasses, at the back of mixed perennial borders, or in informal, naturalistic drifts. Expect the small clustered flowerheads to be carried well above the foliage from June to August, providing seasonally reliable structure.

Sanguisorba off. 'Red Thunder' is an herbaceous perennial in the rose family (Rosaceae) and a cultivated form of burnet. It produces a crown of pinnate leaves with erect stems that can reach 50–200 cm, each stem topped by dense, small flower clusters. Individual flowers have four tiny petals and may range from white to red within 5–20 mm long flowerheads. Flowering takes place from June to August.

Sanguisorba off. 'Red Thunder' is a burnet with pinnate leaves and dense flower clusters that bloom June to August.

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