A Complete Guide to the Latest Planting Methods for Columbine

Columbine, also known as cat's claw flower, is a perennial herbaceous plant of the genus Aquilegia in the buttercup family (Ranunculaceae), native to Europe and North America. Its flowers are delicate and charming, with bright colors and strong adaptability. It is suitable for planting in patches on lawns and under dense forests, and is also suitable as ground cover in moist places such as low-lying areas and streamsides. It has high ornamental value. Let's take a look at how to plant columbine!

Growth Habits of Columbine

Columbine has thick, cylindrical roots, up to 1.5 cm in diameter, simple or with a few branches, with dark brown outer bark. The leaves grow from the roots, with glossy upper surfaces and downy undersides. It blooms between June and July, usually in deep blue-purple or white. It often grows on mountain roadsides, by rivers, or in moist grasslands at altitudes of 200 to 2,300 m. It prefers cool climates and avoids high temperatures and exposure to the sun in summer. It is robust and cold-hardy, and prefers sandy loam rich in humus, moist, and well-drained.

Propagation Methods of Columbine

1. Sowing: Columbine is best sown in pots immediately after the seeds mature. To adjust the dormancy period of columbine, sow immediately after seed collection. Apply sufficient base fertilizer, rake fine and level, prepare the seedbed, water thoroughly, spread the seeds evenly on the surface of the seedbed, and cover with a soil mixture to the extent that the seeds are no longer visible. Keep the bed surface moist; excessive moisture will cause seed rot. Seedlings emerge in 140 days.

2. Division: Columbine division is carried out in August to September. First cut off the branches and leaves on the upper part of the plant, keeping the lower sprouts with lower growth points, then dig up the plant, shake off the soil, and plant according to the natural separation of the main roots. If the main root is aging, it should be removed, making sure the base of the sprout carries part of the root crown, then insert it in a sand bed. After rooting, plant it separately. Divisions can bloom the following year.

Planting Methods of Columbine

1. Potting up: 5 to 6 weeks after columbine sprouts, it can be transplanted using plug trays with a diameter of 3 to 4 cm. After another 5 to 6 weeks, blue columbine can be transplanted into pots with a diameter of 10 to 15 cm, fan columbine can be transplanted into pots with a diameter of 7 to 11 cm, and hybrid columbine can be transplanted into pots with a diameter of 11 to 16 cm. Two transplants are beneficial to plant quality.

2. Medium: The cultivation substrate for columbine needs good drainage. The soil content in the substrate should be about 15%, and about 15% organic matter (such as wood fiber, bark) can be added. For each cubic meter of substrate, apply 1 to 1.5 kg of complete balanced fertilizer, and 1 to 2 kg of slow-release fertilizer, iron chelate, and micronutrients. The pH value should be 5.5 to 6.2.

3. Light: Columbine is a long-day plant. Maintain high light levels. Potted varieties need supplemental lighting in both winter and spring, which helps improve plant quality. In mid-January, it needs to grow under long-day (16 hours) and continuous supplemental lighting (30,000 to 40,000 lux) conditions, with the temperature maintained at 12°C.

4. Temperature: The optimal growing temperature for columbine is 14°C to 16°C. After the roots have formed, lower the temperature to 8°C to 10°C. Temperature changes can improve plant quality. In spring, seedlings begin to grow at 15°C to 18°C for 6 to 7 weeks. A temperature of 10°C to 12°C will extend the cultivation time. Avoid high temperatures and low-light conditions.

5. Fertilizing: Columbine has moderate fertilizer needs. It can be sprayed with a nitrogen-potassium balanced fertilizer at a concentration of 130 ppm to 150 ppm once a week. Avoid high ammonium and high nitrogen levels. No fertilizing after mid-September. Blue columbine and fan columbine can begin spraying a complete balanced nitrogen fertilizer at 100 ppm to 150 ppm in spring, while hybrid columbine can begin spraying a nitrogen-potassium balanced nitrogen fertilizer at 100 ppm to 150 ppm in spring.

Pest and Disease Control of Columbine

1. Mosaic disease

[Symptoms] The whole plant is affected, the leaves show mosaic symptoms, and the leaf surface is wrinkled and deformed.

[Control] Strengthen cultivation management, fertilize scientifically, apply heavy organic fertilizer, use more compound fertilizer, increase phosphorus and potassium fertilizer, and avoid excessive nitrogen fertilizer, so as to improve the nutritional conditions of the plant and enhance its virus resistance. Loosening the soil is beneficial to the development of the plant's root system. Remove weeds in the field in time, eliminate sources of infection, and control aphids early to eliminate virus transmission vectors.

2. Powdery mildew

[Symptoms] The disease occurs on the leaves, initially forming small powdery white spots, which then expand. In severe cases, the entire leaf surface is covered with a powdery white substance.

[Control] At the early stage of the disease, you can choose 15% triadimefon wettable powder at 1500 times dilution, or 20% triadimefon emulsifiable concentrate at 2000 times dilution, or 50% sulfur-multi suspension at 300 times dilution, or 50% thiophanate-methyl wettable powder at 800 times dilution and 75% chlorothalonil wettable powder at 600 times dilution, etc., spraying once every 7 to 10 days for 2 to 3 consecutive sprays. At the early stage of the disease, 2% anti-mildew fungicide 120 aqueous solution or BO-10 aqueous solution can also be used, with 500 ml of pesticide per mu each time, diluted with 100 liters of water (effective concentration 100 ppm) for spraying, once every 10 days, for 3 to 4 sprays.