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Geranium Varieties: A Comprehensive Guide to Choosing and Growing the Perfect Blooms

Published on
August 20, 2024
Geranium Varieties: A Comprehensive Guide to Choosing and Growing the Perfect Blooms
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Why is bonsai training wire used, and when should I remove it?

Wiring is used to guide the branches into specific shapes and positions, allowing you to control how your tree grows. You can use aluminum or copper wire to gently bend and hold branches in place. Typically, wire should be left on the tree for a few months, depending on how fast your tree is growing. You’ll want to check regularly, though—if the wire starts to dig into the bark, it’s time to remove it before it damages the tree. Always be gentle when unwiring to avoid hurting the branches.

Why are bonsai pots so shallow?

Bonsai pots are shallow to restrict root growth and help control the size of the tree. This forces the tree to focus its energy on growing branches, leaves, and, eventually, creating that miniature look. Additionally, shallow pots aid in water drainage, which is crucial for bonsai health since waterlogged roots can easily lead to rot. Aesthetically, the small, shallow pots also highlight the beauty and shape of the bonsai itself, keeping the focus on the tree rather than the container.

How long does it take for a bonsai tree to fully grow?

Bonsai trees are all about patience. It can take anywhere from 5 to 10 years for a bonsai to be considered “mature,” and even then, they continue to grow and evolve throughout their lifespan. The slower the growth, the more intricate and beautiful the tree becomes. That said, if you’re looking for quicker results, starting with a pre-bonsai or young tree can speed up the process a bit!

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Geranium Varieties: A Comprehensive Guide to Choosing and Growing the Perfect Blooms

5 popular geranium varieties infographics

When it comes to adding vibrant color and texture to gardens, few plants rival the charm of geraniums. With their lush foliage and an array of captivating blooms, geraniums have become a staple in gardens around the world. But did you know that within this popular plant species lies a rich diversity of varieties, each with its own unique characteristics and appeal? From the classic garden favorite to the more exotic hybrids, geraniums offer a plethora of options for gardeners of all types.

I still remember the first time I encountered different geranium varieties. It was during a visit to a local botanical garden, where I was greeted by a stunning display of geraniums in every imaginable color and form. As I wandered through the garden, I was particularly struck by the vibrant hues of the Pelargonium 'Rozanne' and the delicate charm of the Geranium sanguineum. That experience not only deepened my appreciation for these versatile plants but also sparked a passion to learn more about the many types available.

In this article, I will explore the fascinating geranium varieties, looking at their unique features, growing needs, and best uses. Whether you're a seasoned gardener or just getting started, understanding these varieties can help you choose the perfect geraniums to brighten up your garden.

10 Geranium Varieties

red geranium flowers thriving outdoors

Here are ten popular varieties of geraniums, each with unique characteristics:

Zonal Geranium (Pelargonium × hortorum)

Zonal Geranium (Pelargonium × hortorum) outdoors credit to plantnet.org
Credit to: Plantnet.org (no author mentioned)
Link: https://identify.plantnet.org/useful/species/Pelargonium x hortorum L.H. Bailey/data

Zonal geraniums, also known as garden geraniums, are a popular and widely cultivated type of geranium, beloved for their vibrant flowers and distinct leaf markings. They grow as upright, bushy plants that can reach heights of 12 to 24 inches, and their leaves feature a characteristic dark band, or "zone," which gives them their name. These geraniums develop in a mounding habit, making them ideal for garden beds, borders, and containers, offering a consistent display of bright red, pink, white, or orange flowers. Zonal geraniums thrive in USDA zones 10-11, flourishing best in full sun and well-drained soil, ensuring they remain healthy and vibrant throughout the growing season. To care for these plants, regular watering is necessary, allowing the soil to dry out slightly between waterings to prevent root rot. They prefer warm temperatures (65-75°F) and moderate humidity, creating an ideal environment for their growth. Zonal geraniums are perfect for gardeners seeking reliable, colorful blooms that add a pop of brightness to any landscape or container garden.

Ivy-Leaved Geranium (Pelargonium peltatum)

Ivy-Leaved Geranium (Pelargonium peltatum) credit to David J. Stang
Credit to: David J. Stang
Link: https://commons.wikimedia.org/wiki/File:Pelargonium_peltatum_Global_Sangria_1zz.jpg

Ivy-leaved geraniums are a unique type of geranium distinguished by their trailing, vine-like growth and glossy, ivy-shaped leaves, making them a favorite for hanging baskets and window boxes. These plants typically grow 12 to 18 inches in length, with stems that gracefully cascade over the edges of containers, producing clusters of delicate flowers in shades of pink, purple, red, and white. Ivy-leaved geraniums thrive in USDA zones 9-11 and perform best in full sun to partial shade, requiring well-drained soil to support their growth. Caring for these geraniums involves regular watering, especially during hot weather, while ensuring the soil is not waterlogged. They prefer warm temperatures (65-75°F) and moderate humidity, which allows them to flourish and display their charming, trailing habit. Ivy-leaved geraniums are ideal for gardeners looking to add a touch of elegance to their outdoor spaces, as their trailing nature makes them perfect for creating stunning, overflowing displays in containers or hanging arrangements.

Regal Geranium (Pelargonium × domesticum)

Regal Geranium (Pelargonium × domesticum) outdoors credit to David J. Stang
Credit to: David J. Stang
Link: https://commons.wikimedia.org/wiki/File:Pelargonium_x_domesticum_Elegance_Light_Lavender_Splash_0zz.jpg

Regal geraniums, often referred to as Martha Washington geraniums, are a striking variety known for their large, showy flowers that boast rich, velvety colors, making them a standout choice for gardeners who love bold, dramatic blooms. These geraniums typically grow 12 to 18 inches tall, forming a bushy, upright shape with serrated, dark green leaves that complement their vibrant flowers, which come in shades of pink, purple, red, and white, often with intricate patterns or darker markings. Regal geraniums thrive in USDA zones 9-11 and prefer cooler climates, flourishing best in partial shade to protect them from intense sun exposure. To care for regal geraniums, it’s important to maintain evenly moist soil, avoiding both excessive dryness and waterlogging, while keeping them in a well-ventilated area to prevent fungal issues. They thrive in temperatures of 55-65°F and moderate humidity, which help them maintain their vibrant blooms and healthy foliage. Regal geraniums are recommended for gardeners who want to make a bold statement in their garden or container displays, as these plants offer an impressive array of colors and forms that can elevate any outdoor space.

Scented Geranium (Pelargonium graveolens)

Scented Geranium (Pelargonium graveolens) thriving outdoors credit to 阿橋 HQ
Credit to: 阿橋 HQ
Link: https://commons.wikimedia.org/wiki/File:香葉天竺葵_Pelargonium_graveolens_-香港嘉道理農場_Kadoorie_Farm,_Hong_Kong-_(9193443560).jpg

Scented geraniums are a delightful variety prized not only for their delicate, often understated flowers but also for their aromatic foliage, which releases a variety of fragrances when touched or brushed against, from citrus and rose to mint and spice. These plants typically grow 12 to 24 inches tall, with deeply lobed leaves that are often textured or fuzzy, adding an extra sensory dimension to their charm. Scented geraniums grow in a mounding habit and are particularly suited to containers, herb gardens, or borders where their fragrance can be fully appreciated. They thrive in USDA zones 9-11 and prefer full sun to partial shade, with well-drained soil to support their growth and prevent root rot. To care for scented geraniums, regular watering is essential, allowing the soil to dry slightly between waterings, and they thrive in warm temperatures (65-75°F) with moderate humidity, conditions that help them produce their fragrant oils. These geraniums are perfect for gardeners who want to add a sensory experience to their garden, with foliage that not only looks beautiful but also offers a variety of pleasant scents.

Hardy Geranium (Geranium pratense)

Hardy Geranium (Geranium pratense) thriving outdoors Credit to: Magnus Manske
Credit to: Magnus Manske
Link: https://commons.wikimedia.org/wiki/File:Geranium_pratense_'Meadow_Cranesbill'_(Geraniaceae)_flower.JPG

Hardy geraniums, also known as cranesbills, are a versatile and resilient group of perennials that are not only easy to grow but also provide a long season of bloom, making them a reliable choice for gardens in a wide range of climates. These geraniums typically grow 12 to 24 inches tall, with mounding foliage that forms a dense, attractive ground cover, and they produce a profusion of small flowers in shades of blue, pink, purple, and white. Hardy geraniums thrive in USDA zones 4-9, making them suitable for both cooler and warmer climates, and they prefer full sun to partial shade with well-drained soil. To care for hardy geraniums, regular watering is recommended, particularly during dry spells, but they are quite drought-tolerant once established, making them low-maintenance plants for various garden settings. They thrive in a range of temperatures from 60-70°F and prefer moderate humidity, conditions that allow them to remain healthy and vigorous throughout the growing season. Hardy geraniums are ideal for gardeners seeking a dependable, long-blooming plant that can be used as ground cover, in borders, or as a filler in mixed plantings.

Rosebud Geranium (Pelargonium × hortorum ‘Rosebud’)

Rosebud Geranium (Pelargonium × hortorum ‘Rosebud’) thriving outdoors Credit to: Magnus Manske
Credit to: Magnus Manske
Link: https://commons.wikimedia.org/wiki/File:Pelargonium_'Rosebud_supreme'_(Geraniaceae)_flower.JPG

Rosebud geraniums are a charming and romantic variety of zonal geraniums, distinguished by their unique, rose-like blooms that are tightly packed and resemble miniature roses, adding a touch of elegance and nostalgia to any garden setting. These geraniums typically grow 12 to 18 inches tall, with sturdy, upright stems and glossy, green leaves that form a lush backdrop for their distinctive flowers, which come in shades of pink, red, and white. Rosebud geraniums develop in a mounding habit, making them suitable for garden beds, borders, or containers where their blooms can be appreciated up close. They thrive in USDA zones 10-11 and prefer full sun and well-drained soil, ensuring that their roots remain healthy and the plants produce abundant blooms. To care for rosebud geraniums, regular watering is necessary, with the soil allowed to dry slightly between waterings to prevent overwatering, and they thrive in warm temperatures (65-75°F) with moderate humidity. These geraniums are perfect for gardeners who want to add a touch of vintage charm to their garden, with blooms that evoke the beauty and romance of old-fashioned roses.

Maverick Red Geranium (Pelargonium × hortorum ‘Maverick Red’)

Maverick Red Geranium (Pelargonium × hortorum ‘Maverick Red’) thriving outdoors

Maverick Red geraniums are a standout variety within the Maverick series, known for their large, striking red flowers that offer a bold splash of color in any garden or container setting, making them a popular choice among gardeners who want to make a strong visual impact. These geraniums typically grow 12 to 16 inches tall, with a well-branched, compact habit that ensures a tidy appearance, and their vibrant red blooms contrast beautifully with their dark green foliage. Maverick Red geraniums develop in a mounding habit, making them ideal for mass planting, borders, or containers where their intense color can be showcased. They thrive in USDA zones 10-11 and perform best in full sun with well-drained soil, conditions that help them produce their best blooms and maintain healthy growth. To care for Maverick Red geraniums, regular watering is important, allowing the soil to dry slightly between waterings to avoid root rot, and they thrive in warm temperatures (65-75°F) with moderate humidity, ensuring that they remain vibrant and healthy throughout the growing season. These geraniums are perfect for gardeners looking for reliable, easy-to-grow plants that provide consistent, vibrant color in their garden or patio containers.

Angel Geranium (Pelargonium × domesticum ‘Angel’)

Angel Geranium (Pelargonium × domesticum ‘Angel’) thriving outdoors Credit to: Forest and Kim Starr
Credit to: Forest and Kim Starr
Link: https://www.flickr.com/photos/starr-environmental/

Angel geraniums are a delightful group of hybrid geraniums that are often admired for their compact growth and pansy-like flowers, which make them a charming addition to any small garden space or container display, offering both beauty and manageability. These geraniums typically grow 8 to 12 inches tall, with small, rounded leaves that are densely packed on the plant, and they produce profuse blooms in shades of white, pink, purple, and red, often with darker markings that add to their visual appeal. Angel geraniums develop in a compact, bushy habit, making them particularly well-suited for containers, window boxes, or small garden spaces where their neat form can be appreciated. They thrive in USDA zones 9-11 and prefer cooler climates, flourishing best in partial shade to protect them from intense sun, especially in hot climates. To care for Angel geraniums, it’s important to keep the soil evenly moist without waterlogging, and they thrive in cooler temperatures (55-65°F) with moderate humidity, conditions that allow them to produce abundant blooms and maintain their compact shape. These geraniums are recommended for gardeners with limited space who want a compact, floriferous plant that brings a touch of elegance and charm to their outdoor areas.

Fireworks Geranium (Pelargonium × hortorum ‘Fireworks’)

Fireworks Geranium (Pelargonium × hortorum ‘Fireworks’) thriving outdoors credit to David Stang
Credit to: David Stang
Link: https://commons.wikimedia.org/wiki/File:Pelargonium_x_hortorum_Fireworks_Cherry_Bicolor_1zz.jpg

Fireworks geraniums are a unique and eye-catching variety known for their vibrant, bi-colored flowers that create a dazzling display reminiscent of fireworks, making them a fantastic choice for adding a burst of color and excitement to any garden or patio setting. These geraniums typically grow 12 to 16 inches tall, with a mounding habit that ensures a full, bushy appearance, and their flowers feature a striking combination of red and white or pink and white, often with a starburst pattern that adds to their dramatic effect. Fireworks geraniums develop in a well-branched, compact habit, making them ideal for garden beds, borders, or containers where their unique blooms can be appreciated up close. They thrive in USDA zones 10-11 and prefer full sun and well-drained soil, conditions that help them produce their vibrant blooms and maintain healthy growth throughout the season. To care for Fireworks geraniums, regular watering is necessary, allowing the soil to dry slightly between waterings to prevent overwatering, and they thrive in warm temperatures (65-75°F) with moderate humidity, ensuring that their colorful display remains vibrant all season long. These geraniums are perfect for gardeners who want to create a dynamic, eye-catching display in their garden or on their patio, with blooms that offer a stunning visual impact.

Rozanne Geranium (Geranium ‘Rozanne’)

moist Rozanne Geranium (Geranium ‘Rozanne’) thriving outdoors credit to Dominicus Johannes Bergsma
Credit to: Dominicus Johannes Bergsma
Link: https://commons.wikimedia.org/wiki/File:Geranium_'Rozanne'.JPG

Rozanne geraniums are a remarkable and award-winning variety of hardy geraniums, celebrated for their long blooming period and stunning violet-blue flowers, which provide a continuous display of color from late spring through fall, making them a highly desirable choice for gardeners seeking low-maintenance, long-lasting beauty. These geraniums typically grow 12 to 18 inches tall, with a sprawling, semi-trailing habit that makes them ideal for ground cover, borders, or container planting, where their prolific blooms can spread and fill space beautifully. Rozanne geraniums thrive in USDA zones 5-8, making them suitable for a wide range of climates, and they prefer full sun to partial shade with well-drained soil to support their vigorous growth. To care for Rozanne geraniums, regular watering is recommended, particularly during dry periods, but they are drought-tolerant once established, making them a resilient and low-maintenance option for various garden settings. They thrive in moderate temperatures (60-70°F) with low to moderate humidity, conditions that allow them to bloom continuously and maintain healthy foliage. These geraniums are perfect for gardeners looking for a reliable, easy-to-grow plant that offers an extended season of color, with flowers that create a beautiful, naturalistic effect in any garden.

Frequently Asked Questions and Answers:

Q: How often should I water my geraniums?

A: Watering needs vary by type, but generally, geraniums should be watered when the top inch of soil feels dry. Avoid overwatering, especially in cooler climates.

Q: Can I grow geraniums indoors?

A: Yes, many geranium varieties can be grown indoors, especially scented and regal geraniums. Ensure they get bright, indirect light and keep them in well-drained soil.

Q: What type of soil is best for geraniums?

A: Geraniums prefer well-drained soil with moderate fertility. A mix of potting soil, perlite, and sand can provide the right balance for container-grown plants.

Q: How can I encourage more blooms on my geraniums?

A: To encourage more blooms, ensure your geraniums get plenty of sunlight and avoid overfeeding with nitrogen-rich fertilizers. Deadhead spent flowers to promote continuous blooming.

Q: Do geraniums need to be pruned?

A: Pruning can help maintain the shape and promote bushier growth. Regularly remove dead or yellowing leaves and trim back leggy stems.

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