16 Heat and Cold Hardy Flowering Outdoor Plants

With the term “perpetual flowering” gardeners and florists refer to the plants that flower continuously for more than three months. In addition, these have an uninterrupted flowering that lasts at least two consecutive seasons. That means you can have flowering outdoor plants throughout the year if you choose the right varieties well.

16 flowering outdoor plants that resist cold and heat

he most frequently mentioned advantage of these plants is that, with a clever combination, your garden, terrace or balcony can be full of color during the 12 months of the year. Remember that it is not only a pleasure for human beings, but also for bees, butterflies and other insects.

Another positive aspect is the low maintenance effort. Plants that flower year-round simply have to root and then shelter from the wind. Also, of course, water them as many times as they need.

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1. Thought

Pansy’s color variations make it one of the most popular flowering plants. It is considered a classic among year-round flowering plants and impresses with its variety.

The main flowering period begins in March, followed by a second flowering period in autumn. Only during the frost months do flowers appear, although the plant resists up to 15 degrees below zero.

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2. Winter monkshood

This plant shows its yellow flowers already in February and even snow and ice do not discourage her. From a purely visual point of view, there are strong similarities to buttercup, but it also has a strong odor.

Even if there is early flowering there is no need to worry about frost protection, because the winter monkshood supports temperatures of up to 29 degrees below zero.

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3. Curly marshmallow

The shrub mallow belongs to the mallow family and comes from southern Europe. The plant grows up to 150 centimeters tall and it has flowers that range in color from white to pink or purple.

This plant does best in the company of other perennials. The flowering period begins in June and lasts until late autumn.

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4. Verbena bonariensis

It belongs to the verbena family and feels good in gardens, although it is also comfortable in pots on the terrace or balcony, but make sure it is in a sunny place protected from the wind.

vervain It blooms between June and the end of October. This means you can leave the old flower stalks in place for new plants to form in spring.

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5. Periwinkle

Periwinkle belongs to the oleander family and is poisonous. It prefers to grow in the shade under shrubs or deciduous trees and has white, purple or blue flowers.

The flowers appear between April and May, but the plant also impresses with its glossy, dark green leaves in the garden. Sometimes it even blooms a second time in the fall.

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6. Coreopsis

This plant belongs to the daisy family and it is one of the most popular garden flowers. You can choose between taller varieties, which open like bushes, or short perennials that are very stable.

Originally, this plant flowered in yellow, but now other color variants such as pink, red, and white can be found in nurseries.

This plant will be happy in a garden bed and makes a perfect match with echinacea for the color combination. Flowering time is between June and October. It is resistant and very easy to care for.

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7. Salvia nemorosa

Salvia nemorosa belongs to the mint family and it feels very comfortable in sunny places in the garden. It does particularly well in natural gardens, but also in rock gardens, and is a great source of nectar and pollen for many insects.

Salvia nemorosa is up to 60 centimeters tall and can combine well with roses. The flowers consist of two to six individual white, pink, or blue-purple flowers. Blooming year-round, this hardy plant is happy with regular pruning.

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8. Herb of Saint Benedict

In a garden, it looks great with purple bells or and forget-me-nots. The growth is quite small, but persistent. The plant, very robust, it blooms between April and August in a magnificent yellow or white, but also pink or red.

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9. Bee Flower

This plant displays its brilliant flowers especially at dusk, which is due to its affiliation with the evening primrose family. It likes a sunny place, but it must be protected from the wind, and is just as comfortable in gravel beds as it is in a pot on the terrace.

It can grow up to 150 centimeters tall and almost 90 centimeters wide. and despite its dimensions it is very easy to care for. Temperatures of up to 15 degrees below zero are not a problem for the plant, which shows its flowers between July and the first frosts.

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10. Geranium wallichianum

This hardy perennial not only impresses with its flowers, but also with its pleasant aroma. It loves sunny or semi-shaded places, which must always be sheltered from the wind, since the stems are not stable. The flowers are dark purple with dark veins running through them.

The flowering period of the geranium is between June and October, and the leaves turn red to yellow in the fall months. A combination in the garden with roses or delphiniums is just as good as with peonies.

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11. Mallow

The royal mallow can grow up to two meters in height. To this hardy plant that grows as a perennial likes a sunny bed and well-drained soil, although you should make sure to leave enough space between the plants when arranging them in the garden.

the royal mallow shows its magnificent flowers between June and September, with an exceptional color palette ranging from white and yellow, apricot and pink to red and violet or even purple-black.

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12. Korean mint

Korean mint presents itself as an easy-care perennial flowering plant that is also very hardy.

Grows up to 50 centimeters tall and it develops bushy, with the flowers arranged in panicles. The flowers are purple, pink or white and appear in the months of July to September.

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13. Iceland Poppy

These plants like the sun, but as the name suggests, they don’t like the heat too much. It stands out with its blaze of color during the summer months and grows to a total height of up to 25 centimeters.

The flowers are cupped and they appear in shades of yellow or oranges and reds. This cushion-shaped plant is considered hardy. You just have to leave the old and discolored plants alone in the bed, since after the winter they will produce flowers again.

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14. Catnip

This plant is not only popular with cats, but also inspire gardeners creating a perennial garden. Because there the robust plant, which blooms for a long time and is winter hardy, always looks good.

It grows up to 80 centimeters tall and bushy. It shows blue-violet panicle-shaped flowers. Blooms all summer through fall.

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15. Blanket Flower

The blanket flower inspires with the striking, large, yellow-red flowers that are cupped. The flowering season of this perennial, which can reach 50 centimeters in height, is between July and September, which shows its splendor well into the autumn months. The hardy perennial likes the sun and is also very suitable as a cut flower for the vase.

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16. Echinacea

Those who have it in their garden can enjoy the beauty of the long blooms in the brilliant colors pink, rose and red between July and September. echinacea it grows up to 100 centimeters tall and prefers a sunny location. In autumn, it must be cut back vigorously so that it will sprout again the next year.