Aquilegia

Some plants behave impeccably in a garden, staying precisely where they were planted, flowering when expected, and generally respecting the gardener’s carefully considered arrangements. Then there is Aquilegia, commonly known as Granny’s Bonnet or Columbine, a delightful little troublemaker that appears to regard planting plans as little more than friendly suggestions. You might purchase a beautiful deep-purple variety, carefully position it among your perennials and spend the following spring admiring its elegant flowers. A couple of years later, however, you discover pale pink aquilegias growing beneath a rose, a blue one emerging beside the path and something decidedly unusual appearing in a corner where you are quite certain you never planted anything. Welcome to the wonderfully unpredictable world of Aquilegia, a plant whose enthusiasm for making its own arrangements is one reason it remains such an enduring cottage garden favourite.

A Flower with a Rather Curious Appearance

Aquilegias belong to the buttercup family, Ranunculaceae, and the genus contains numerous species originating from Europe, Asia and North America. Britain’s native species, Aquilegia vulgaris, has long been associated with cottage gardens, woodland edges and lightly shaded places. However, many plants found in modern gardens are cultivated forms or hybrids. Their flowers are particularly distinctive, with five petal-like sepals surrounding five true petals, which commonly extend backwards into slender, curved structures known as spurs. These contain nectar and help give the flowers their unmistakable appearance, although the precise shape varies considerably between species and cultivated varieties. Some possess long, elegant spurs, others have shorter, hooked structures, while certain cultivated forms have lost them almost entirely.

The familiar name Granny’s Bonnet comes from the resemblance of certain flowers to an old-fashioned bonnet, while Columbine derives from the Latin word associated with a dove. Some observers imagined that the arrangement of the petals and spurs resembled a group of doves gathered together. Personally, I have always thought the flowers look rather like something a particularly imaginative hatmaker might have designed after an unusually long lunch. Whatever interpretation you favour, there is no mistaking an aquilegia in flower, particularly when its nodding blooms appear among the emerging foliage of a spring border.

An Extraordinary Variety of Colours and Forms

One of the great attractions of aquilegias is their remarkable range of colours and flower forms. Blues, purples, pinks, reds, yellows and whites are all represented, sometimes within the same flower, while the familiar Aquilegia vulgaris commonly produces nodding blue-violet blooms. Cultivated varieties offer a much broader palette, and the long-spurred hybrids, including those associated with the McKana group, can be particularly striking with their contrasting colours and elegant floral structures. Some varieties produce double flowers, while others possess unusually dark petals that appear almost black under certain lighting conditions. Most garden aquilegias flower in late spring and early summer, generally around May and June in Britain, although flowering times vary by species, weather, and location.

Their attractive, divided foliage is another advantage, with softly rounded leaflets creating a delicate appearance that works particularly well among ferns, hardy geraniums, hostas and other plants associated with informal or woodland-style planting. Aquilegiates are particularly effective when allowed to weave naturally through established borders, their slender flowering stems rising above neighbouring plants without creating an excessively heavy or dominating presence. They have a rather old-fashioned elegance that suits cottage gardens beautifully, although there is no reason they cannot be incorporated into more contemporary planting schemes. Their flowers are sufficiently unusual to attract attention without requiring the sort of elaborate horticultural presentation that some plants seem to demand.

Why Aquilegias Refuse to Stay Put

Perhaps the most entertaining characteristic of aquilegias is their enthusiasm for self-seeding. Many are relatively short-lived perennials, although individual plants can persist for several years under suitable conditions, and they often remain in the garden through successive generations of seedlings. This is where things become particularly interesting, because aquilegias can cross-pollinate readily when different compatible varieties grow near one another. Their offspring may therefore display colours and flower forms quite unlike those of their parents, producing combinations that the gardener never deliberately selected. A carefully purchased named variety might produce seedlings with purple, pink or blue flowers, or some unexpected mixture of all three, creating the impression that the original plant has somehow changed its identity.

In reality, the parent plant has not mysteriously changed colour. Its offspring carry different combinations of inherited characteristics, an important distinction for gardeners who assume that collecting seed from a favourite aquilegia will produce identical plants. Some species and carefully maintained seed strains may reproduce relatively consistently, but many garden hybrids will not come true from seed. For me, that unpredictability is part of their charm, because there is something rather enjoyable about discovering a new combination that no garden centre ever intended to sell you. Of course, gardeners who prefer a carefully controlled colour scheme may find this behaviour less endearing, particularly when a collection of elegant white aquilegias gradually produces an assortment of pink and purple descendants. Removing unwanted seedlings or deadheading before seeds mature can help you maintain greater control, although it also removes much of the excitement of discovering what might appear next.

Finding the Right Place in the Garden

Aquilegiates are generally accommodating plants, but they perform best when you understand their basic requirements. In British gardens, they usually appreciate fertile, well-drained soil that retains some moisture during active growth, with partial shade often ideal, particularly in warmer or drier locations. Wide varieties will also grow successfully in sunshine where the soil does not dry out excessively, making them useful additions to mixed perennial borders, woodland edges and lightly shaded areas beneath deciduous shrubs. They pair particularly well with spring bulbs and early-flowering perennials, helping bridge the period between the disappearance of the earliest spring displays and the arrival of more substantial summer flowers.

Established plants may tolerate occasional dry spells, but prolonged drought can affect growth and flowering, while persistently waterlogged conditions can cause problems, particularly during winter. One of the pleasures of aquilegias is their ability to establish themselves in unexpected places, with seedlings sometimes appearing between paving stones, beside gravel paths or in small pockets of soil along a boundary. These locations can suit them surprisingly well, provided they have sufficient moisture during establishment. However, the fact that an aquilegia has chosen somewhere unusual does not necessarily mean it has chosen somewhere sensible. A seedling growing directly in the middle of a frequently used path may be charming for approximately three minutes before becoming an inconvenience.

Fortunately, young seedlings can often be moved while their roots are still relatively small, whereas established plants are generally less enthusiastic about having their arrangements disturbed.

Growing Aquilegias from Seed

Aquilegias are relatively straightforward to propagate from seed, although germination is not always uniform, so that patience may be required. You can sow fresh seed in pots or trays in late summer or autumn, though spring sowing is also possible, and some seed batches benefit from a period of cold, moist conditions to encourage germination. Results can vary by species, seed freshness, and growing conditions, so follow any specific instructions supplied with purchased seed. Use a suitable seed compost, keep the surface lightly moist rather than saturated, and do not bury the seeds too deeply. Once seedlings are strong enough to handle, you can transfer them into individual pots or plant them in their intended positions when conditions are favourable.

Aquilegiates develop substantial roots as they mature and are not always enthusiastic about being moved once established, which makes young seedlings generally easier to transplant than older plants. Division is not usually the preferred method of propagation because established specimens can resent root disturbance, and gardeners who want to preserve a particular named cultivar should not assume its seedlings will reproduce the original characteristics. For those who enjoy a little unpredictability, however, allowing selected seedheads to mature and scatter their contents naturally is considerably less complicated. The following spring may reveal a collection of young plants appearing in places that seem entirely unrelated to the original planting. However, this is simply the result of seeds being dispersed and finding suitable conditions to germinate.

Aquilegias and Garden Wildlife

Aquilegias also offer visiting insects nectar and pollen during a period when many garden pollinators are becoming increasingly active. Bumblebees are familiar visitors, and the relationship between aquilegias and their pollinators is particularly interesting because the length and shape of the floral spurs can influence which insects can reach the nectar. Some species have evolved flowers suited to particular pollinator groups, while others attract a broader range of insects. Nectar accessibility depends partly on flower structure and the visitor’s feeding apparatus, showing how closely plant form and insect behaviour can be connected.

Some bees may even obtain nectar by making holes near the base of the spurs rather than entering the flower conventionally. This behaviour, known as nectar robbing, lets insects reach nectar without necessarily transferring pollen, and it reminds us that relationships between flowers and their visitors are not always as straightforward as they first appear. For gardeners interested in supporting wildlife, aquilegias can add to a varied selection of spring and early-summer flowering plants. Still, they should be one component of a broader planting scheme rather than a complete solution for pollinators. A garden offering different flower shapes, flowering periods and suitable habitats will generally support a wider variety of insects than one relying heavily on any single plant.

When Things Go Wrong

Although aquilegias are generally easy-going, they are not entirely free from problems. Powdery mildew can occasionally affect the foliage, particularly where plants are stressed or air circulation is poor, while leaf miners may create pale winding trails through the leaves. Minor damage is often largely cosmetic, but a more troublesome visitor is the aquilegia sawfly, whose green, caterpillar-like larvae can consume foliage remarkably quickly. An apparently healthy plant can be reduced to a collection of bare stems in a surprisingly short time, particularly when several larvae feed together. The damage can look alarming, although established plants may recover and produce fresh growth, and regular spring inspections can help identify the problem before substantial defoliation occurs.

A more serious concern in Britain is aquilegia downy mildew, which can cause distorted growth, discoloured foliage and significant plant decline. Suspected cases deserve particular attention because the disease can be far more damaging than ordinary cosmetic leaf problems, and badly affected material should be dealt with carefully rather than left among healthy plants. Good garden hygiene, suitable spacing and avoiding prolonged leaf wetness can help reduce certain disease pressures, although no cultivation practice can guarantee complete protection. It is also worth remembering that aquilegias contain toxic compounds and should not be eaten. Gloves are sensible for anyone prone to skin irritation, and you should discourage children and pets from eating any part of the plant.

Knowing When to Leave Them Alone

Aquilegiates present gardeners with an interesting choice because their greatest attraction can also become their most inconvenient habit. We can deadhead them after flowering, remove unwanted seedlings, and try to maintain a carefully arranged display, or we can let selected plants set seed and accept that next year’s garden may look slightly different. Neither approach is wrong, and the best choice depends largely on the character of the garden and the gardener’s preferences. In a formal border, too many self-sown aquilegias may become a nuisance, particularly when they begin crowding more valuable or slower-growing plants. In contrast, in a cottage garden their wandering habits can help create the relaxed, informal appearance that makes such spaces attractive.

My preference is usually somewhere between the two, allowing the plants a little freedom while intervening when necessary. After all, gardening involves managing living things, not arranging furniture, and plants will grow, compete, reproduce and occasionally ignore the plans we have made for them. Aquilegiates are particularly good at reminding us of that fact. Their willingness to spread into unexpected corners can be an advantage where a garden benefits from a little spontaneity, as long as you monitor the resulting seedlings and prevent them from overwhelming less vigorous neighbours.

A Little Unpredictability Is No Bad Thing

Something is reassuring about a garden that changes gradually from year to year. A familiar shrub grows larger, a perennial disappears after several seasons, and an aquilegia suddenly emerges somewhere entirely unexpected, carrying flowers in a colour you cannot remember ever planting. These small surprises are part of what makes gardening interesting, reminding us that even the most carefully maintained garden remains a living environment rather than a static arrangement. Aquilegiates are not particularly demanding, nor do they require elaborate cultivation techniques, and given suitable conditions they will often establish themselves, flower beautifully and produce another generation with remarkably little assistance.

They may not always appear where we intended, and their offspring may bear only a passing resemblance to the original plants. Still, perhaps that is precisely why they remain such enduring cottage garden favourites. There is a quiet pleasure in discovering something unexpected among familiar plants, particularly when it has arrived without any deliberate intervention on our part. A garden in which everything behaved perfectly would certainly be easier to manage, but I’m just not convinced it would be nearly as interesting.

Published by The Curious Gardener

A Gardener's Curiosity - It Usually Starts in a Garden …

Leave a Reply