Linaria genistifolia aka Broomleaf Toadflax

Linaria genistifolia belongs to the plantain family, Plantaginaceae. It is a perennial: it lives for more than one year. Garden sources call it broomleaf toadflax or broom-leaved toadflax. Its native range starts in Europe. It reaches southwestern Siberia and northern Xinjiang. Kew places it in a temperate climate. The RHS says it is not native to Britain and Ireland. It lists Antirrhinum genistifolium as a synonym, or another name. This older name means the same species, not a different plant.

Chicago Botanic Garden says the plant grows upright. The sources give no height or spread for a full-grown plant. They thus do not show how much garden space it needs. They give no account of this species' leaves or stems. The RHS does describe the genus, a broader plant group. That account alone cannot show which traits this species has.

Chicago Botanic Garden lists bloom time as July through August. This puts its stated bloom time in summer. The entry gives yellow, green, and blue as bloom colors. It does not say how those colors occur on the plant. Nor does it give more detail on the flowers. The species entries say nothing about its fruit or seeds. They do not name the animals that pollinate its flowers, or move pollen between them.

For a garden site, Chicago Botanic Garden lists partial shade. It gives USDA hardiness zones 3–8. The care data also lists a moderate need for water. These facts give a starting point when choosing a site. They do not show which soil texture or pH it prefers. The sources give no UK hardiness rating. Neither source rates how fast it grows. Nor does either rate how hard it is to care for.

The sources support calling this an upright perennial that blooms in summer. They do not give specific landscape uses or plants to pair with it. No species account covers pests, diseases, or steps to control them. The sources give no basis to judge its weed risk. They list no edible parts, uses as medicine, or toxic effects. These gaps do not prove that the plant is safe. The evidence does not support using any part for food. Assessing these uses would need a fuller account of the species.