Which outdoor plants are cold-hardy and heat-tolerant? These varieties are recommended

Cold-hardy and heat-tolerant outdoor plants can not only help create gardens, decorate courtyards and green our cities, but also add lasting vitality and beauty to our outdoor spaces. Here are some recommended outdoor plants that are both cold-hardy and heat-tolerant:

1. Roses

Roses are known as the "queen of flowers" and have excellent cold hardiness and heat tolerance. In cold winters, as long as they are given proper protection, such as simple measures like covering them with dry hay, they can overwinter safely. And in hot summers, their well-developed root systems can ensure they draw enough water from the soil to maintain growth and flowering. Roses come in many varieties, with different flower forms and rich colors, from vivid red and pink to elegant yellow and white, and whether single or double, they are highly ornamental. They can be used to create flower beds and flower borders, or climb fences and walls to form beautiful flower walls.

2. Crape Myrtle

Crape myrtle (Lagerstroemia indica) is an excellent outdoor landscape plant. It has good cold hardiness; in low-temperature environments, its branches and trunk can endure a certain degree of cold without being damaged by frost. At the same time, crape myrtle is also heat-tolerant, and it can still thrive during the high temperatures of summer. The crape myrtle has a graceful tree form, a smooth and clean trunk, and brilliant flower colors, including rose red, bright red, deep pink, light red or purple, and white. Its flowering period is relatively long, from June to  September, adding color to garden landscapes throughout the summer. It is often planted in parks, courtyards, along roadsides and other places.

3. Japanese Honeysuckle

Japanese honeysuckle (Lonicera japonica) has extremely strong adaptability to its environment and is both cold-hardy and heat-tolerant. In the cold north, it can overwinter safely outdoors, and its vines and roots both have a certain degree of cold resistance. In hot summers, Japanese honeysuckle grows vigorously. It is a vine, and its flowers open white and then turn yellow, which is how it got its name. Japanese honeysuckle has a delicate fragrance, and its flowers can be used medicinally, so it has both ornamental and practical value. It can be planted beside a fence and allowed to climb, forming a green screen, and it can also be used as a trellis plant.

4. Pomegranate

The pomegranate tree has strong adaptability and is both cold-hardy and heat-tolerant. In winter, it can endure a certain degree of low temperature, and even if part of the aboveground portion freezes, it can still sprout new shoots from the roots the following spring. In hot summers, the pomegranate tree flowers and sets fruit; its flowers are like fiery red trumpets, and when the fruit ripens, the pomegranate seeds are crystal clear. The pomegranate is not only ornamental, but its fruit is also rich in nutrients. It is often planted in courtyards and symbolizes good fortune.

5. Bougainvillea

Bougainvillea is a beautiful flower full of tropical flair and is especially suitable for outdoor planting. In high-temperature environments, bougainvillea is like a plant that has found its own paradise; ample sunlight can make its flowers even more brilliant, and its flowering period is also significantly extended. The leaves and flowers of bougainvillea are covered with a waxy layer, which acts like a protective film, effectively reducing water evaporation and allowing it to maintain water balance even in hot, dry climates. It is worth mentioning that bougainvillea also has a certain degree of cold hardiness; some cold-hardy varieties may show a small amount of leaf drop at slightly lower temperatures, but as long as the temperature does not fall below the limit it can withstand, bougainvillea can still survive tenaciously.