Blue and Purple Spring Plants: Edible Wild Herbs for Your Garden

Between making the first plans for barbecues and tackling the spring clean, something is happening in the garden that many people miss: tiny blue and purple plants are pushing up through the lawn, cracks in paving and along bed edges. What can look “overgrown” is actually a free supply of wild vegetables, an insect buffet and a natural medicine cabinet. Anyone who looks more closely now instead of cutting everything back can reclaim a little genuine nature.

Why these small flowers are not troublesome weeds

The term “weed” is misleading. It generally refers to plants that appear by themselves where nobody has sown them. Yet these are often among the hardiest and most valuable plants in the garden.

What many people see as chaos in the lawn is actually a sign of living soil – and is often edible too.

March and April are particularly good months for taking a closer look. Once you know the usual blue and purple spring flowers, three native favourites are easy to recognise: sweet violet, ground ivy and Persian speedwell. All three can soon be seen as nuisances in a lawn, but they show that a garden can be more than a closely cropped patch of green.

Sweet violet – spring fragrance for insects, not the shears

Sweet violet is often the quiet star of the border. It grows low to the ground, has heart-shaped leaves and richly violet flowers that often release a sweet scent as early as March. It especially likes partly shaded spots, beneath shrubs or beside walls.

For centuries, sweet violet was highly valued in traditional herbal medicine. Its essential oils, mucilage and flavonoids made it a popular ingredient in teas, syrups and violet syrup for coughs. Today, however, many herbal specialists advise being cautious with it.

Sweet violets are among the year’s first flowers – every single bloom is worth its weight in gold to hungry bees.

Why it is best to leave sweet violets alone

• The plant usually grows in scattered clumps rather than large carpets.
• It flowers while many other plants are still dormant.
• Pollinators such as solitary bees and bumblebees can find nectar and pollen here early in the year.
• Every plant pulled up is one less part of this already limited insect buffet.

Anyone aiming to garden thoughtfully should therefore enjoy sweet violet visually and leave it mainly for the insects. The principle is simple: harvest abundant species, and protect the less common ones.

Ground ivy – a flavoursome ground cover, not a needless plant

Ground ivy is very different. It creeps along the ground, forms proper mats and produces small blue-violet lipped flowers. Many lawn owners are annoyed when it emerges through short grass, yet it is one of spring’s most interesting wild herbs.

Among other compounds, the plant contains bitter substances, tannins, essential oils and saponins. These give it a spicy, bitter flavour reminiscent of a blend of mint and thyme – but considerably stronger.

How to use ground ivy in the kitchen

As its flavour is intense, only a small amount is needed. It can be used in a number of appealing ways, for example:

• finely chopped into herb butter or herby soft cheese
• as a punchy addition to a mixed wild-herb salad
• in spreads with ground elder, dandelion or chives
• to add an aromatic note to soups or potato dishes

Important: always use ground ivy sparingly and never in kilogram quantities. Otherwise, its bitterness can quickly overpower a dish. Its major advantage over sweet violet is that it grows abundantly, so it can be gathered without guilt.

What looks like a “problem weed” in the lawn is actually a free culinary herb – more intense than many seasonings from the supermarket.

Persian speedwell – a blue carpet with added benefits

Anyone with a lawn will probably know Persian speedwell. It stays low, produces slender stems and bears tiny sky-blue flowers marked with darker lines. At first glance, it seems more like a wildflower seen on holiday than something edible.

Speedwell was used much more widely in the past, including as a tea herb. The plant contains bitter substances, tannins and other secondary plant compounds that were valued in traditional herbal medicine. Today it tends to be overlooked in favour of other wild herbs – unfairly so.

Edible, mild and ideal for beginners

Persian speedwell has a much milder flavour than ground ivy: lightly fresh and pleasantly subtle. That makes it especially easy to use every day:

• as a delicate addition to a wild-herb salad
• as an edible garnish for bread, soups or desserts
• in herb lemonades or infused water with slices of lemon

Because speedwell grows in large numbers in lawns and along paths, it can be harvested without putting its populations at risk. For anyone trying wild herbs for the first time, it is often the most relaxed place to start.

What these plants reveal about your garden

Blue and purple spring flowers are not simply attractive; they also reveal something about the condition of the soil. Where they grow, the ground is usually not sterile or “dead”, but supports active soil life including fungi, bacteria, earthworms and microorganisms.

Plant	Typical location	What it suggests
Sweet violet	Part shade, humus-rich and moist	Loose soil, leaf litter and good structure
Ground ivy	Lawns, path edges and slightly damp areas	Nutrient-rich conditions that are not overly dry
Persian speedwell	Lawns, beds and gaps between paving	Open soil and regular disturbance from mowing

Learning to interpret these signs makes it easier to understand your own garden. Instead of thinking only “get rid of it”, you begin to see where wild plants indicate living soil – and where it appears impoverished.

How to identify blue spring plants safely

Beginners in particular should look carefully at their typical features. Even a basic guide is very helpful:

• Sweet violet leaves: heart-shaped, soft and slightly glossy, growing close to the ground.
• Ground ivy leaves: rounded to kidney-shaped, with scalloped edges and arranged along creeping stems.
• Persian speedwell leaves: small, lightly toothed, opposite on the stem and very delicate.
• Flower colour: sweet violet is deep violet, ground ivy blue-violet, and speedwell sky blue with a whitish centre.

If you are unsure, always examine several characteristics and, when in doubt, leave the plant where it is. The guiding rule of many herbal experts is: only eat what has been identified with certainty.

From the “perfect lawn” to an edible meadow

The traditional uniform lawn, mown short, heavily fertilised and with little life in it, may look tidy – but it provides neither food for insects nor ingredients for the kitchen. A meadow containing sweet violet, ground ivy, speedwell and other wild herbs looks more alive and even saves work.

Those who mow less gain more diversity – and, with a little knowledge, a free herb garden in the lawn as well.

Even small changes can have a noticeable effect:

• Extend mowing intervals, especially during spring.
• Leave individual “insect islands” in the lawn uncut.
• Deliberately protect sweet violets, while using ground ivy and speedwell consciously.
• Mow only where a short lawn is genuinely needed, such as paths or play areas.

Wild herbs, self-sufficiency and looking beyond the obvious

Anyone walking through the garden with open eyes in March soon realises that self-sufficiency does not begin with a large vegetable plot or greenhouse. It starts with knowing the plants that are already there. A handful of ground ivy in butter, some Persian speedwell in a salad and sweet violets for the insects – that is all that is needed at first.

At the same time, you can begin growing your own miniature vegetables on the windowsill. Microgreens from rocket, radish or other varieties grow within a week and perfectly complement the wild herbs from the garden. Gradually, this creates a combination of spontaneous nature outdoors and deliberately cultivated greenery indoors.

Once you stop seeing these blue and purple plants as a nuisance and start treating them as an opportunity, you automatically look differently at every “gap” in the lawn. Places that once prompted an immediate attack with a weeding tool suddenly provide free ingredients, habitat for insects and a little independence from the supermarket. This is where a modern, relaxed approach to the garden begins – and to the inconspicuous spring flowers that are so much more than just “weeds”.