What does perennial mean?

A perennial is a plant that lives for more than two years. Instead of completing its life cycle in a single season, it comes back year after year, often emerging in spring, flowering in summer, and dying back neatly for winter before repeating the show all over again come the new year. They�re the backbone of most gardens because they offer reliable structure and colour with very little fuss.

Are dahlias perennials?

Dahlias are technically tender perennials. In warm climates they return each year, but in the UK their tubers can be damaged by winter frost. You can treat them as perennials by lifting and storing the tubers over winter, or simply mulch them very well in milder regions. Otherwise, many gardeners grow them as annuals and replant fresh tubers each spring.

Are geraniums perennials?

Hardy geraniums, often called cranesbills, are absolutely perennials and some of the toughest you can grow. They spread gently, flower for weeks, and shrug off winter without complaint. Bedding geraniums (Pelargoniums), often seen in summer displays, aren�t hardy and are better treated as annuals unless overwintered somewhere frost free.

Are begonias perennial flowers?

It depends on the type. Tuberous begonias are tender perennials, so the tubers can be lifted and stored for replanting the following year. Begonia semperflorens, commonly used for bedding, is not hardy outdoors in the UK, so most gardeners grow it as an annual. Indoors however, many begonias behave like perennials, thriving for years.

When should I plant perennials?

Most perennials can be planted in spring or early autumn. Spring planting gives them time to establish before flowering, while autumn planting lets them settle in while the soil is still warm. The main rule is to avoid extremes: very hot, dry periods in summer, or frozen, waterlogged ground in winter.

When should I cut back perennials?

Many perennials are cut back in late autumn once they�ve finished flowering, but there�s no rush. Leaving seedheads over winter helps wildlife and adds structure to the garden. Others, such as salvias and penstemons, prefer to be left until spring so the old stems protect their crowns from frost. Once new growth appears, cut back the old stems to tidy things up.

What's the difference between annual and perennial?

Annuals complete their entire life cycle in one season. You plant them, they dazzle with flowers, set seed, and then they�re done, ready for the compost heap. Perennials, on the other hand, come back each year from the same root system. They may die back over winter, but they bounce back once the weather warms. Annuals give instant colour; perennials give long-term structure and reliability.

What is the most hardy perennial flower?

There are many, but one of the hardiest is the hellebore. It pushes through freezing temperatures and often flowers in the depths of winter. Hardy geraniums, peonies, sedums, and daylilies are also well-known for coping with cold UK winters without any special care.

Perennial Plants & Flowers

Discover Beautiful Perennials for a Colourful, Low-Maintenance Garden

Perennials are the backbone of any well-planned garden. These dependable plants return year after year, filling borders, beds and containers with long-lasting colour, shape and texture. Whether you love classic cottage garden perennials or prefer bold, architectural varieties, there is a perennial plant for every space, style and skill level.

Perennial flowers are incredibly rewarding. Many hardy perennials thrive in typical UK conditions, shrugging off cold winters and bursting back into life each spring. Some produce continuous displays for months on end, while others offer seasonal highlights that mark the rhythm of the gardening year. Long flowering perennials such as hardy geraniums, salvia or coreopsis keep borders vibrant through summer, while late-season stars like rudbeckia and sedum carry gardens into autumn.
Even smaller spaces can benefit from perennial plants. Compact varieties suit pots, patio corners and balcony gardens, delivering reliable colour with little effort. Many perennial flowers are also excellent for pollinators, encouraging bees and butterflies into your outdoor space from spring to autumn. If you are building a border from scratch, a collection of hardy perennials is one of the easiest and most cost-effective ways to achieve instant impact.
At YouGarden, you can explore a wide choice of perennial plants UK gardeners rely on, from shade-loving hosta and ferns to sun-loving verbena and echinacea. Every plant is selected for reliability, performance and ease of care, helping you build a garden that looks good from year to year.