Corydalis caucasica aka Corydalis Caucasica

Corydalis caucasica is part of the poppy family, Papaveraceae. It has the common name Caucasus corydalis. The Royal Horticultural Society, or RHS, accepts its scientific name as correct. This plant is not native to Britain or Ireland. The sources do not say where it grows in the wild. They give no height or spread for plants grown in gardens. So they do not show how tall or wide it grows there.

Chicago Botanic Garden lists this species as a bulb. It says the plant grows in a mound. Its entry gives no details about the leaves or stems. The RHS does describe leaves and flowers for the genus. Those traits apply to the group, not this species alone. They do not show the exact form of this plant. Neither source describes its fruit or seeds. The sources thus leave parts of its form unclear.

The flowers have shades of lavender and purple. Chicago gives two bloom periods: March–April and May–June. These dates place its blooms in spring and early summer. The entry also notes that birds and butterflies show interest. It does not say which birds or butterflies visit. Nor does it say how they use the plant. The record gives no more detail about these visits.

For growing this plant, Chicago lists full sun and partial shade. It calls for moist soil and USDA hardiness zones 5–7. It gives no soil texture or pH range. The entry names several ways to use it in gardens. It can grow as a single specimen, a plant shown on its own. Gardeners can also use it as groundcover, to cover the soil. It has a place in understory planting, beneath taller plants, too. These uses pair its mound shape with flowers in their season.

The Chicago entry is a garden record kept in an archive. Its content dates from before February 2022 and gets no updates. The sources give no details about pests or diseases. They do not say whether the plant is edible or toxic. Neither shows whether people or pets can eat it without harm. They give no other care needs beyond light, moisture, and hardiness.