Insects in the garden

Insects in the garden are crucial for a healthy and productive garden. They pollinate flowers and fruit trees, break down organic material, and keep many pests down through natural balance. If the garden is only “neat” and tidy, there are often too few habitats – and then you may get more problems with aphids, caterpillars, and poor pollination 🐝🌿.

In this guide, you’ll get a practical and easy-to-understand overview of which insects are beneficial in the garden, how to attract them, and which simple changes create more biodiversity in a Danish garden.

🌿 Why are insects important in the garden?

• Pollination: Bees, hoverflies, and butterflies help fruit trees, berries, and vegetables produce better yields.
• Natural pest control: Ladybirds, lacewings, and parasitic wasps reduce aphids and caterpillars.
• Decomposition: Many small creatures help break down leaves and dead plant material.
• Stable ecosystem: More species means fewer extreme fluctuations and greater resilience.

🐝 Beneficial insects you want in the garden

Pollinators

• Honeybees and wild bees: important for fruit trees, berries, and flowers.
• Hoverflies: adults pollinate – larvae often eat aphids.
• Butterflies: contribute to pollination and are a good sign of diversity.

Beneficial insects against pests

• Ladybirds: both larvae and adults can eat many aphids.
• Lacewings: larvae are effective “aphid hunters”.
• Parasitic wasps: lay eggs in pests (e.g., aphids/caterpillars) and keep them down.
• Ground beetles: help eat caterpillars and other small creatures in the soil.

🌸 Plants that attract insects

You get the most insects when there are flowers throughout the season. The goal is that there is always something available from early spring to late autumn.

Early spring

• crocuses, snowdrops, and other early bulbs
• willow (very important early food)

Spring and summer

• herbs in bloom (thyme, oregano, chives)
• phacelia, marigold, cornflower
• umbellifers (e.g., dill and other umbellifer flowers)

Late summer and autumn

• sedum (stonecrop), asters, and other late flowers
• ivy in bloom (important late food)

🏡 How to make your garden insect-friendly

1) Let part of the garden be “a bit wild”

• Keep edges with grass, herbs, and flowers.
• Let a corner have leaves and brushwood.
• Avoid clearing everything completely in autumn.

2) Create habitats

• Brushwood hedge: branches in a pile or between stakes.
• Stone pile: warmth and shelter for many small creatures.
• Bare soil: small areas for ground-nesting wild bees.
• Water: a shallow bowl/mini-pond with stones as a “landing pad”.

3) Use fewer “harsh” solutions

• Avoid broad-spectrum pesticides and unnecessary treatments.
• Accept a few aphids as “starter feed” for beneficial insects.
• Remove pests mechanically (e.g., rinse with water) before you take harsher measures.

🪵 Insect hotel: does it help?

An insect hotel can be nice, but it works best as a supplement. The biggest effect comes from flowers, habitats, and fewer toxic/sterile zones.

• Place it sunny and dry, preferably facing south/southeast.
• Keep it away from constant rain and shade.
• Vary materials (holes in wood, tubes, dry stems).

🧠 Common mistakes in the insect garden

• Too little flowering: only a few weeks with flowers results in too few pollinators.
• Too tidy: no leaves, no brushwood, no shelter.
• Too much chemistry: it affects beneficial insects too.
• No water: especially important in drier periods.

❓ Frequently asked questions about insects in the garden