Top Gardening Tips For Vinca Flower

vinca flower

vinca flower

Updated on 12/3/2023
Emma DowneyBy Emma Downey
Gardening Expert
Learn More about Emma Downey

Vinca annual, or Catharanthus roseus, is a tropical perennial plant typically treated and kept as an annual outside of its native range. An annual vinca is an excellent option for sunny regions despite blooms and foliage similar to those of impatiens. Impatiens like partial shade, but annual vinca thrives in full sun. These annual blooms, also known as Madagascar periwinkle, aren't the gardening landscape's newest or flashiest yearly flowers. However, recent cultivar advancements demand a deeper investigation of this typical bedding plant. Another name for these flowers is the periwinkle of Madagascar. Horticulturists have been putting in a lot of effort to develop new colors for plants that have spectacular blossoms and are simple to grow from seed. The Vinca flower is already resistant to the effects of drought and has had no problems with pests. After the last date when frost is expected in your area, the plant is seedling.

vinca flower

vinca flower

The leaves have a leathery texture and a dark green color. Vinca is a fast-growing plant that can reach heights of 6 to 18 inches, depending on the type, and has a similar spread. From early summer until the first frost, annual vinca plants produce solitary blooms that each have five petals and commonly touch or overlap with one another. A significant number of types have eyes of different colors. If you haven't grown vincas in your garden in a while, you might want to take a look at the extended color palette that now features blooms in every shade of pink, rose, and lilac across the spectrum. Regardless of which you choose, butterflies will be drawn to them, and rabbits won't eat them.

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There is not one portion of the annual vinca plant that is not poisonous to humans, cats, or dogs.

  • Names: Annual vinca, Madagascar periwinkle, and rose periwinkle are some familiar names for this plant.
  • Scientific Name: Catharanthus roseus is its scientific name.
  • Family: Family of Apocynaceae.
  • Plant Type: Type of Plant Herbaceous perennial that is typically treated as an annual.
  • Mature Size: Mature Size 6-18 in. height, similar spread.
  • Soil Exposure: Sun Exposure Full sun, half shade.
  • Soil Type: Sandy loam is the type of soil.
  • Soil PH: Soil PH is between 6.0-7.0.
  • Bloom Time: Blooming starts from June to the first frost.
  • Colors: White, pink, mauve and crimson are the colors of the flowers.
  • Hardiness Zones: USDA Hardiness Zones are 9-11; elsewhere, it is planted as an annual.
  • Native Area: Madagascar.
  • Toxicity: Harmful for felines, toxic for pets, and unhealthy for human beings.

Annual Vinca Care

vinca flower

vinca flower

When planting vinca in the spring, take your time and don't rush. These annuals thrive in warm climates, so their performance will suffer if they are planted too early or in too cold or wet soil. When the evening temperatures average sixty degrees Fahrenheit, you should produce your vincas about the same time you lay out your tomato transplants. This is the best time to grow vincas. Even if midday shadow is acceptable, the best exposure to the sun is in the morning. This is especially true in hot southern climates.

Growing conditions optimal for annual vinca include full sun and sandy loam soil. Even though it can withstand dry conditions, it will do better if it is soaked in water once a week rather than having water poured on it from above. Vincas are self-cleaning and self-flowering, so there is no need to remove the spent flowers from them.

Vinca flowers are the easiest to cultivate, as they are resistant to a wide range of pests and diseases and require very little attention. Stem rot and leaf spots are both potential outcomes of poorly draining soil. It's also possible that slugs and snails will eat the leaves. 3


Annual vinca loves full sun. It can survive in partial shade, but if the shade is abundant, it may get stunted.


vinca flower

vinca flower

Vincas are picky about the type of soil they grow in. You can amend your heavy soil with compost or grit, or you could plant your vincas in raised beds or pots filled with a potting mix that is permeable and drains well instead.


The typical scenario of most blunders people make when caring for annual vinca is watering it too regularly. When the top inch of soil has a dry feeling to the touch, water the plant, the recommended amount of water to apply to your garden each week is about an inch, but if it frequently rains where you live, you shouldn't apply any water at all. This is a plant that does well in soil that is quite dry. 3

Temperature As Well As Relative Humidity

The ideal conditions for this plant are heat and humidity. If you plant it too early in the cool spring, it will have a hard time becoming established, and it will continue to struggle as the weather gets slower in the fall.

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At the time of planting, either apply compost to the bed or use a fertilizer with a gradual release rate. Because nutrients are removed from the soil more quickly when plants are grown in containers, they require more regular feedings.

Varieties Of The Annual Vinca Plant

vinca flower

vinca flower

The following are some of the best annual vinca varieties:

  • The 'Cooler' series is an excellent selection for gardeners who live in areas with mild summers.
  • The plants in the 'Heatwave' series have a growth habit that is quite condensed.
  • The 'Mediterranean' series includes plants that can trail up to two feet and are ideal for use in hanging baskets and planters.
  • The 'Pacifica' series is a pioneer in its field.
  • This unique type of vinca produces double blossoms, giving the plant a full and lush appearance. Its name is 'Soiree Double White.'
  • Flowers from the 'Stardust series' have a white starburst in the center of each petal. Keep an eye out for the 'Stardust Orchid,' which won an award from the All-America Selections.

Propagating Annual Vinca

Cuttings can be taken from this plant early in the fall to facilitate propagation. They should spend the winter rooted in water. Late in the winter, plant the rooted cuttings in potting soil, and nurture them until they mature into nursery plants that may be transplanted outside once the weather in spring has warmed up.

How To Germinate And Grow An Annual Vinca Plant



The most recent varieties of vinca are simpler to germinate from seed than their ancestors were. Because of this, you should start the seeds indoors 12 to 16 weeks before the final frost in your region is typically expected to occur. The seeds should be covered sufficiently to guarantee they are kept in the dark. If additional heat is required, they should be set to a temperature of approximately 75 degrees Fahrenheit. Before putting seedlings into the garden, you should make sure to harden them off for a week to ten days first.

How To Make A Vinca Plant Flower

Vinca is a vigorous grower, but in order for it to produce its charming and vibrant blossoms, there are a few conditions that must be met first:

  • If the vinca in your garden does not blossom, try thinning it out a little bit to allow more sunlight to reach the lower layers.
  • Check to see that the soil has enough drainage and does not receive excessive water. If you want your vinca to blossom, don't water it unless the earth is completely dry first. Vinca won't bloom if its roots are soggy.

No deadheading of the vinca is required as long as those two conditions are met; the plant will bloom continuously throughout the season.

Problems Typically Encountered With Vinca Annua

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Leaves Showing Brown Spots

Vinca is an annual plant susceptible to a wide variety of fungal diseases, including botrytis blight, leaf spot, and even root rot. These issues arise when there is an excess of moisture and insufficient air circulation. This issue can be readily remedied by thinning out the plants, which entails removing all damaged leaves using a garden shear that has been thoroughly cleaned and sharpened and then spraying a fungicide.

Leaves Are Yellow And Wilted

If the leaves of your annual vinca flower are becoming yellow and wilting, the plant is likely receiving an excessive amount of water. Put your finger down on the ground and feel it to see if it is wet. It's easy to fix the problem of having too much moisture if you notice your leaves turning yellow and wilting.

Frequently Asked Questions

How quickly does the annual vinca plant mature?

Extremely quick. Midway through the summer, annual vinca seedlings will have matured to their maximum size.

What is the main distinction between the vinca minor and the vinca annual?

The annual vinca is a plant that grows erect and has flowers that can be pink, white, or red and are similar in appearance to impatiens. Vinca minor, often known as periwinkle, is a type of ground cover that has dark foliage and flowers that are a lighter shade of purple.

Which other kinds of plants go nicely with annual vinca?

You may highlight the contrasting eye of the vinca flower by combining it with another flower whose eye is the same color as the eye of the vinca flower. For instance, you might plant white vincas with a burgundy eye next to burgundy zinnias, or you could combine peach vincas with a red eye with dramatic wine-toned celosia plants. Both of these plant combinations would look beautiful. Annual vincas should be planted alongside other heat and sun-loving flowers, such as million bells, moss rose, lantanas, and penta flowers.

What is the best way to make use of the annual vinca in my garden?

Take advantage of the rapid development pattern exhibited by vincas. Purchase a six-pack of vinca plants to use as filler plants in any empty sunny space in the garden border where your perennials have not yet reached their full growth potential. The 'Cora Cascade' series of trailing annual vincas does not leave a large imprint in the soil, but it will pour across paths and peek through lanky shrubs to offer a splash of color.

Outside of the garden beds, where else may I plant annual vinca?

Vinca plants thrive in window boxes and other garden containers due to the fact that they require little attention and maintenance. As the temperatures rise, these blooms will grow more profusely, ensuring that your steamy summer days will continue to be filled with color all the way up until autumn.