Natural gardening in an allotment: A step-by-step guide to biodiversity

Key takeaways

• Natural gardens evolve constantly: a gradual transformation is ecologically sound and sustainable.
• Structural diversity through garden zones (e.g. deadwood areas, ruderal patches) creates habitats for insects and small animals.
• Native plants (indigenous species) provide the essential food source for specialised insects.
• Non-native plants are not inherently harmful, but should be replaced with site-appropriate wild plants over time.

The path to a vibrant garden space

A natural garden is not a static state, but a dynamic process. Many gardeners feel pressured by the expectation of creating a perfectly ecological garden overnight. However, especially in June, during the main growing season, observing your garden as a living habitat is the first step. An allotment garden, divided into different functional areas, provides the necessary complexity to combine human relaxation with ecological niches such as dry-stone walls or log piles.

Integrating deadwood is of central importance here. Deadwood is not waste, but an essential substrate for wood-boring beetle species, fungi, and as a nesting site for solitary wild bee species. By creating structures that go beyond the classic lawn, you encourage the colonisation of species that have no chance of survival in sterile environments.

Structural diversity and ecological functions

Every garden can be divided into different zones. This spatial layout helps you maintain order while still allowing for wildness. A ruderal area (a fallow, usually nutrient-poor area) encourages spontaneous vegetation, which in turn serves as a food source for specialised insects.

Guide to redesigning your garden

1. Assessment: Document which native wild plants are already present and which species (e.g. invasive non-native plants such as butterfly bush Buddleja davidii) need to be critically reviewed.
2. Integrate deadwood: Create a pile of native wood in a sunny to semi-shady spot. This provides beetles and wild bees (e.g. Osmia species) with necessary protection.
3. Define spaces: Separate utility areas from nature zones. This increases acceptance and ensures a clear structure without sterile surfaces.
4. Gradual replacement: Replace non-native ornamental plants step-by-step with site-native plants such as viper’s-bugloss (Echium vulgare) or chicory (Cichorium intybus) to boost local biodiversity.
5. Avoid chemicals: Use only mechanical methods for weed control. Synthetic fertilisers and peat have no place in an ecologically managed garden; use compost from your own garden waste instead.

A successful natural garden is characterised by its consistency. Ensure you do not use pesticides, as these disrupt the entire food chain and directly harm beneficial insects as well as birds. Patience is your greatest ally here.

Frequently asked questions

Do I have to remove all non-native plants immediately?

No. A natural garden develops step-by-step. Replace non-native species with site-appropriate wild plants over time as and when replacement becomes necessary.

Why is deadwood important?

Deadwood provides a habitat for beetle larvae, fungi, and wild bees. It is a central building block for ecological stability and biodiversity in the garden.

Further reading

• Allotment regulations and natural gardening: Designing in compliance with the law
• Peat-free gardening: Protecting peatlands directly from your garden
• Using regional seeds: Why provenance counts in the garden
• Supporting wild bees in the garden: Targeting biodiversity colonisation
• Creating a deadwood hedge: Building habitats in the garden