Are you still looking for a nice perennial that blooms as early as possible and is undemanding for your shade garden? The fern-leaved larkspur would be ideal for this.
Around 300 species of corydalis thrive in the temperate zones of our northern hemisphere, some also in South Africa. Most grow wild in deciduous forests or bushes. Only a few bring with them the essential basics for breeding new varieties that can be cultivated in the garden to the delight of the hobby gardener. For example, the fern-leaved corydalis (Corydalis cheilanthifolia) is one of the perennial species that have become favorites for the garden.
Small Plant Portrait
The name of this plant derives from the brownish-green leaves, which resemble those of ferns, and the crested lark, which is the inspiration for the Greek name "Corydalis"
. The fern-leaved larkspur can grow up to 30 centimeters high and just as wide. Its yellow flowers unfold in clusters on stalks that grow upwards. The bright yellow pile then shines from May to June.
This location is optimal for the fernleaf corydalis
This variety thrives best in a partially shaded location. It is best to place the perennial in front of the edges of trees or walls.
The fern-leaved corydalis does not place high demands on the soil. It is content with a permeable, humus-rich and slightly acidic soil. Nevertheless, the soil should retain moisture in summer. With these requirements, the flowering perennial qualifies perfectly as a companion for rhododendron groups or other ornamental shrubs that appreciate a slightly acidic bed.
Mix heavy garden soil well with sand and humus, then you can plant Corydalis cheilanthifolia on it without worry.
How to properly care for the fernleaf corydalis
Casting:
Keep the soil regularly moist, especially during prolonged dry spells in spring and summer. Extensive mulching of the fernleaved corydalis site will prevent the moisture from evaporating as quickly. It is advisable to renew the mulch layer several times. A moist soil promises bestgrowth for the perennial. Waterlogging, on the other hand, damages the plant considerably.
Fertilize:
The best time to fertilize your Corydalis is in spring. Use compost mixed with a slow-release organic fertilizer, such as horn shavings.
Pruning:
In the fall, when the plant retires for winter dormancy, cut back the wilted foliage about 5 inches from the ground. You can also use your pruning shears on the fernleaf corydalis during the vegetation period to remove faded flower stalks or damaged and withered leaves.
Hiberation:
Although the perennial can withstand frosty temperatures down to - 20° Celsius without damage, winter protection is recommended. After pruning in autumn, cover the planting site with needle brushwood. How to protect the root of the plants from getting wet.
Summary:
The Fernleaved Corydalis brings light into dark corners of your garden. It is particularly suitable for light shady gardens, borders on the edges of trees and rhododendron groups. The perennial flowers in bright yellow from May to June. The plant prefers a partially shaded location with well-drained, humus-rich soil. Water regularly in spring and summer. Compost mixed with horn shavings covers the nutrient requirements. Although Corydalis is hardy, you should cover it.