Yes, green onions and scallions refer to the same vegetable. The terms are used interchangeably in different regions.
Yes, you can regrow green onions from kitchen scraps. Place the white bulb ends with roots in a glass of water, ensuring the roots are submerged. Change the water regularly, and new growth will emerge from the top.
Bolting occurs when green onions prematurely produce a flower stalk. To prevent bolting, avoid planting them during the hottest part of the year and keep the soil consistently moist.
Larkspur, scientifically known as Delphinium, is a genus of perennial flowering plants belonging to the family Ranunculaceae. Renowned for their tall, elegant spikes adorned with vibrant blooms, larkspurs are favored by gardeners and florists alike.
I remember the first time I decided to plant larkspurs in my own garden. It was a spontaneous decision fueled by a visit to a local botanical garden, where a stunning display of these flowers captivated me. The vibrant blues and purples stood out so strikingly against the green foliage that I was immediately inspired. I rushed home, researched everything I could about larkspurs, and soon found myself at the nearest nursery, excitedly picking out seeds and seedlings. That summer, my garden transformed into a colorful haven, with the larkspurs becoming the star attraction.
In this comprehensive guide, we explore everything you need to know about growing larkspur—from its botanical characteristics and preferred growing conditions to propagation techniques, common pests and diseases, and creative uses in landscaping and floral arrangements.
Larkspurs are notable for their tall, erect stems that can reach heights of up to six feet or more, depending on the variety. The flowers bloom along these spikes, forming dense clusters of blossoms in a range of colors including blue, purple, pink, white, or bi-colored. The foliage is deeply lobed and often palmate, giving the plant a lush and ornamental appearance even when not in bloom.
The flowers of larkspur are typically spurred, resembling the shape of a dolphin's head, which gives the genus its scientific name, Delphinium, derived from the Greek word for dolphin. Each flower consists of five petal-like sepals, with one sepal elongated into a spur. The plants vary in size depending on the species and cultivar, with some dwarf varieties remaining under two feet tall, while others can exceed six feet in height.
Larkspur comes in various colors and is prized in gardens for its beauty and vertical interest. Here's more about their growing period and size:
Larkspur is a popular garden plant known for its tall spikes of colorful flowers. Here are the preferred growing conditions for larkspur:
Larkspurs prefer cool climates and are well-suited to regions with mild summers and cold winters. They thrive in full sun but can tolerate partial shade, particularly in warmer climates where afternoon shade helps prevent stress and extends blooming periods.
Well-drained soil is essential for larkspur. They prefer fertile, loamy soil with a neutral to slightly alkaline pH. Amending the soil with organic matter such as compost before planting improves drainage and fertility, ensuring healthier plants and better blooming.
Larkspur (Delphinium spp.) thrives best under specific temperature and humidity conditions to ensure robust growth and beautiful blooms. The ideal temperature range for larkspur is between 55°F to 75°F (13°C to 24°C), with seed germination occurring optimally between 55°F to 65°F (13°C to 18°C). While larkspur can tolerate a range of temperatures, it does not perform well in extreme heat, with temperatures above 80°F (27°C) causing stress and reduced blooming. Moderate humidity levels are preferred, as high humidity can promote fungal diseases such as powdery mildew and botrytis. Ensuring good air circulation by preventing overcrowding can help mitigate these issues. Additionally, larkspur plants thrive in full sun to partial shade, well-drained fertile soil with a slightly alkaline to neutral pH (6.5 to 7.5), and require regular watering with the soil allowed to dry slightly between waterings. By maintaining these optimal conditions, larkspur will grow vigorously and produce stunning flowers.
Larkspur thrives best when it receives ample sunlight, preferring full sun exposure to ensure robust growth and prolific flowering. Ideally, the plant should receive at least 6-8 hours of direct sunlight each day. In regions where the summers are particularly hot, larkspur can benefit from some afternoon shade to shield it from the intense heat, which can otherwise cause stress and reduce flower production. This balance of full sun with occasional partial shade in hotter climates helps maintain the plant's health and encourages a vibrant display of blooms.
Whether you're planting from seed or propagating established plants, understanding the right methods ensures successful growth and abundant blooms.
Larkspurs are commonly grown from seed, which should be sown directly into the garden bed in early spring or late fall, depending on your climate. Ensure good seed-to-soil contact by lightly pressing the seeds into the soil and covering them with a thin layer of mulch.
If starting with nursery-bought plants, transplant them into well-prepared soil after the last frost date. Space plants 12 to 18 inches apart to allow for adequate air circulation and room for growth.
Established larkspur clumps can be divided in early spring or fall to propagate new plants. Carefully dig up the clump, separate the individual plants, and replant them in prepared soil. Water thoroughly after planting to encourage root establishment.
Taking care of Larkspur involves several key steps to ensure they thrive and remain healthy:
Ensure the soil remains consistently moist, especially during dry periods, to support healthy growth. Monitor the moisture level regularly, as larkspurs prefer well-drained soil that doesn't become waterlogged, which can lead to root rot. Water at the base of the plant rather than overhead to minimize the risk of foliage diseases, such as powdery mildew and leaf spots. Use a watering method that allows the water to penetrate deeply into the soil around the roots.
Apply a balanced fertilizer with equal parts nitrogen, phosphorus, and potassium (such as a 10-10-10 formula) early in the spring as the larkspur starts its new growth phase. Follow the manufacturer's instructions carefully regarding the amount and frequency of application to avoid over-fertilization, which can harm the plant. Proper fertilization promotes vigorous growth and enhances flower production throughout the season.
Regularly removing spent flowers is crucial to promote continuous blooming and prevent the plant from diverting energy into seed production prematurely. Deadheading encourages the larkspur to produce more flowers and prolongs the overall blooming period. Trim the flower stalks just above a healthy leaf node to maintain a tidy appearance and stimulate the growth of new blooms.
Larkspur plants, especially taller varieties, benefit from additional support to prevent them from bending or collapsing under their own weight, particularly in windy conditions or after heavy rain. Install stakes or use other support structures early in the growing season to provide stability without damaging the plant's roots. Secure the stems gently to the support using soft ties or twine to allow for natural movement while keeping the plant upright. Regularly check and adjust the supports as the larkspur grows taller and heavier.
Larkspur can be grown in containers, making them a versatile choice for patios and small gardens. Use a well-draining potting mix and ensure the container has adequate drainage holes to prevent waterlogging. When potting larkspur, choose a container that allows for sufficient root growth. Repotting is necessary when the plant outgrows its container, typically every 1-2 years. To repot, gently remove the plant from its current pot, trim any dead or excess roots, and place it in a slightly larger container with fresh potting mix. Water thoroughly after repotting to help the plant settle in its new home.
In regions with cold winters, larkspur plants may need protection to survive the frosty conditions. Mulch around the base of the plants with a thick layer of straw, leaves, or compost to insulate the roots. For potted larkspur, move the containers to a sheltered location, such as a garage or basement, where they won't be exposed to freezing temperatures. Reduce watering during the winter months to prevent root rot, but ensure the soil doesn't dry out completely. In mild climates, larkspurs can often survive the winter with minimal protection. However, if frost is expected, covering the plants with a frost cloth can provide additional protection.
Larkspurs can be susceptible to various pests and diseases. Here are some common ones to watch out for:
Larkspurs are relatively resistant to pests, but they can occasionally be affected by aphids, slugs, and snails. Regularly inspect plants for signs of infestation and treat promptly with insecticidal soap or other appropriate remedies.
The most common diseases affecting larkspurs include powdery mildew and root rot, particularly in poorly drained soil. Avoid overhead watering, improve air circulation around plants, and remove any affected foliage promptly to minimize the spread of disease.
A: Yes, larkspur can be grown in containers as long as the container is large enough to accommodate their root system. Use a well-draining potting mix and ensure the container receives adequate sunlight. Regular watering is essential, as containers can dry out faster than garden beds.
A: Yes, larkspur flowers and foliage contain alkaloids that are toxic to both humans and animals if ingested. It's advisable to plant larkspur away from areas frequented by pets and children and to handle them with gloves when working with the plants.
A: To encourage larkspur to reseed, allow some of the flowers to remain on the plant and produce seeds. After the seeds have matured and dried, collect them and scatter them in the garden where you want them to grow next season. Lightly rake the soil to ensure good seed-to-soil contact.
