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Ranunculus asiaticus (Persian Buttercup)

Persian Buttercup, Turban Buttercup, Persian Crowfoot

Ranunculus, Ranunculus Flowers, Ranunculus Flower, Buttercups, Persian Buttercups, Ranunculus Asiaticus, Turban Buttercups, spring flower bulb, fall flower bulb
Buttercup, Persian Buttercup, Ranunculus, Ranunculus asiaticus
Persian Buttercup, Buttercup, Ranunculus, Ranunculus asiaticus
Buttercup, Persian Buttercup, Ranunculus, Ranunculus asiaticus,

Adored by florists and gardeners, Ranunculus asiaticus (Persian Buttercup) is a tuberous perennial boasting brilliantly colored flowers adorned with multiple layers of delicate, crepe paper-thin petals. Easy to grow if some rules are followed, Ranunculus boast long-lasting, single, double, or frilled, exquisite blossoms in a rainbow of gorgeous colors.

What is Ranunculus?

Ranunculus, often called buttercup, is a genus of about 600 species of flowering plants native to a wide range of regions, from the Arctic to temperate zones in Asia, Europe, North America, and the Mediterranean. The Persian buttercup (Ranunculus asiaticus) is one of the most popular species for gardening.

  • Habit and Size: Ranunculus asiaticus is a tuberous perennial with a compact growth habit, typically growing 12-24 in. tall (30-60 cm). It grows from bulb-like corms that are easy to find in nurseries and catalogs. The leaves are finely divided and fern-like, adding an attractive texture to the garden even when the plant is not in bloom.
  • Flowers: Ranunculus are most renowned for their showy flowers, reminiscent of roses or peonies, with their densely layered, crepe paper-like petals. Flower colors span almost every hue, including white, yellow, orange, red, pink, and various bicolor options.
  • Bloom time: The flowers bloom for about 4-7 weeks in late spring to early summer in cold climates (planted in spring), or in early-mid spring in mild climates (planted in fall). A single Ranunculus plant may produce as many as 35 flowers in one blooming season.
  • Hardiness: Ranunculus are cool-season flowers. They perform best where winters are relatively mild and springs are long and cool. They are winter hardy in growing zones 8-11, where they come back year after year.
  • Uses: Whether treated as perennials or annuals, Ranunculus flowers add brilliance to pots and containers and can be planted in the garden. They are commonly used in borders, containers, or cut flowers due to their long vase life (up to 7 days). Prized by flower shops, they are a favorite in wedding bouquets.
  • Pollinators: These plants attract various pollinators with their bright, nectar-rich flowers
  • Toxic: Ranunculus are poisonous to animals (cats, dogs, horses) and humans.
  • Deer/rabbit: Rabbits and deer typically avoid eating ranunculus, making it a good choice for gardeners dealing with these types of wildlife.

Guide Information

Hardiness 8 - 11
Heat Zones 7 - 11
Climate Zones 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs, Perennials
Genus Ranunculus
Exposure Full Sun
Season of Interest Spring (Early, Mid, Late)
Summer (Early)
Height 1' - 2'
(30cm - 60cm)
Spread 1' - 2'
(30cm - 60cm)
Maintenance Low
Water Needs Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Tolerance Deer, Rabbit
Landscaping Ideas Patio And Containers, Beds And Borders
Garden Styles Cutting Garden, Informal and Cottage, Mediterranean Garden
Ranunculus asiaticus ‘Cloni Pon-Pon Hermione’ (Persian Buttercup)
Ranunculus asiaticus ‘Tecolote Orange’ (Persian Buttercup)
Ranunculus asiaticus ‘Tecolote White’ (Persian Buttercup)

Why Should I Grow Ranunculus?

Growing Ranunculus offers a range of benefits that can enhance any garden. Here are a few reasons why you should consider growing them:

  • Exceptional Blooms: Ranunculus are renowned for their rose-like, ruffled flowers that come in an array of bright, cheerful colors. The abundance of tightly packed petals gives each bloom a lush, luxurious look that is hard to rival.
  • Long-Lasting Cut Flowers: With a vase life of up to 7 days, Ranunculus flowers make excellent cut flowers. Their sturdy stems and long-lasting blooms ensure they maintain their beauty, making them perfect for bouquets or floral arrangements.
  • Low Maintenance: Once established, Ranunculus are relatively carefree. They require little attention beyond regular watering during dry periods and removal of spent flowers.
  • Pest Resistance: The natural toxicity of Ranunculus makes them resistant to many common garden pests, including deer and rabbits.
  • Seasonal Interest: Blooming in late spring to early summer, Ranunculus fill the gap between early spring bulbs and summer perennials, providing a burst of color when many other plants are just starting to grow.
  • Versatility: Ranunculus are perfect for a variety of garden settings, from borders and containers to rock gardens. They’re also well-suited to traditional or cottage-style gardens.

In short, the beauty, resilience, and versatility of Ranunculus make them a fantastic addition to any garden.

Ranunculus asiaticus ‘Cloni Success Hanoi’ (Persian Buttercup)
Ranunculus asiaticus ‘Delano Yellow’ (Persian Buttercup)
Ranunculus asiaticus ‘Tomer Red’ (Persian Buttercup)

Garden Design with Ranunculus

Ranunculus can make a stunning addition to any garden design. Here are some tips for incorporating buttercup flowers into your garden:

  • Color palette: Ranunculus flowers come in a wide range of colors, including white, pink, red, orange, and yellow. Choose a color scheme that complements the other plants in your garden, or use them as a focal point with their vibrant hues.
  • Layering and height: Ranunculus plants typically grow to be about 12-24 inches (30-60 cm) tall. Plant them in the middle or front of garden beds, where their colorful blooms can be easily seen. You can also layer them by planting taller plants behind them and shorter plants or ground covers in front.
  • Grouping: For a more striking visual impact, plant ranunculus in clusters or drifts rather than individually. This will create a mass of color and texture that can draw the eye and serve as a focal point in your garden.
  • Companion plants: Pair with other spring-blooming plants that have similar growing requirements. Good companion plants for ranunculus include tulips, daffodils, hyacinths, pansies, and primroses. You can also plant these buttercups with other cool-season flowers such as snapdragon (Antirrhinum), calendula, Chinese forget-me-not (Cynoglossum amabile), African daisy (Arctotis), candytuft (Iberis), Oriental poppy (Papaver orientale), sweet pea (Lathyrus odoratus), and toadflax (Linaria).
  • Container gardens: Ranunculus can be grown in containers, making them a great choice for patios, balconies, or small garden spaces. Choose a well-draining potting mix and a container with drainage holes to ensure healthy plant growth. You can combine them with other container-friendly plants or use them as a standalone feature.
  • Succession planting: Plant ranunculus corms at different times or intervals to extend the blooming season. Staggered planting will give you a continuous display of colorful blooms throughout the spring.
  • Cutting garden: Ranunculus flowers have a long vase life, making them excellent for cut flower arrangements. Include them in a cutting garden, where you can harvest their blooms to create fresh bouquets for your home or as gifts.
  • Borders and edging: Use ranunculus to create colorful borders or edging along pathways, garden beds, or other garden features. Their vibrant flowers can provide a striking contrast against the green foliage of other plants or hardscape elements.

Companion Plants for your Ranunculus

Antirrhinum majus (Snapdragon)
Cynoglossum amabile (Chinese Forget-Me-Not)
Iberis sempervirens (Evergreen Candytuft)
Arctotis (African Daisy)
Hyacinthus orientalis (Dutch Hyacinth)
Lathyrus odoratus (Sweet Pea)
Narcissi (Daffodils)
Papaver orientale (Oriental Poppy)
Tulips

Growing Tips

Here are some key tips for growing Ranunculus:

  • Planting: Ranunculus bulbs, also called tubers, should be planted in the fall in warmer climates (where winters are mild and spring comes early) and in the spring in cooler climates.
  • Site Selection: Ranunculus prefers a sunny location. They do best in an area where they’ll get at least six hours of sunlight each day.
  • Soil: They prefer well-draining soil. Adding compost or a soil conditioner can improve the quality of the soil and promote healthy growth.
  • Watering: Water thoroughly at time of planting. Afterward, water moderately when in growth and flower. Allow soil to dry out between waterings.
  • Planting Depth and Spacing: Plant the tubers about 2 inches deep (5 cm) and 4-6 inches apart (10-15 cm). The tubers look like mini bunch of bananas – plant them with the fingers pointing downwards.
  • Feeding: Feed the plants with a balanced flower fertilizer to promote healthy growth and bountiful blooms.
  • Mulching: Mulching can help to keep the soil moist and cool, as well as keep weeds at bay.
  • Deadheading: Remove spent flowers regularly to encourage continuous blooming.
  • Overwintering: In colder climates, dig up the tubers in the fall and store them in a cool, dry place through the winter. Replant in spring after the danger of frost has passed.

Remember, Ranunculus tubers can rot if they’re watered too much before they sprout, so be careful not to overwater them, especially before they’ve sprouted.

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While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.

Guide Information

Hardiness 8 - 11
Heat Zones 7 - 11
Climate Zones 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs, Perennials
Genus Ranunculus
Exposure Full Sun
Season of Interest Spring (Early, Mid, Late)
Summer (Early)
Height 1' - 2'
(30cm - 60cm)
Spread 1' - 2'
(30cm - 60cm)
Maintenance Low
Water Needs Average
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Cut Flowers, Showy
Tolerance Deer, Rabbit
Landscaping Ideas Patio And Containers, Beds And Borders
Garden Styles Cutting Garden, Informal and Cottage, Mediterranean Garden
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