Understanding Your Impact

When you donate through Terry, your contribution funds real, measurable restoration: whether that’s planting trees, creating pollinator habitat, or regenerating farmland.

Because every project works in different ways, we translate all donations into shared ecological units so you can easily understand the scale of your impact.

That’s what the three metrics represent:
🌳 Trees planted – forest and reforestation projects
🌸 Pollinator habitat – biodiversity and wildflower restoration
🌾 Soil regeneration – farmland and ecosystem recovery

These numbers act as equivalents, not literal outcomes. In other words: your donation supports one type of project at a time, but we express its value in a universal way: so impact from a forest, wetland, or agroforestry project can all be compared clearly.

Your total donation and impact include everything you’ve supported since joining Terry, across all missions. We’re working toward deeper, project-level transparency, where you’ll soon be able to see exactly how each donation contributed to each mission’s results.

1. Why Three Metrics Exist

Each project type restores the planet in a different way. A forest project doesn’t operate like a pollinator meadow or regenerative farm, yet all of them rebuild the same foundations of life: biodiversity, climate, and soil.

To make these different impacts comparable, we use three universal units:

• Trees planted

• Pollinator habitat created (m²)

• Farmland regenerated (m²)

These units are standardized conversions, based on verified partner costs. They allow you to understand the environmental weight of your contribution, without forcing all projects into the same category.

2. Trees Planted

💶 €1.20 = 1 tree
Source: One Tree Planted

We use verified European averages based on planting and maintenance costs for native trees. Each euro funds:

• Seedling production, planting, and maintenance

• Long-term soil and habitat recovery

• Carbon storage and ecosystem restoration

Conversion used:
€1 = 0.83 trees planted

3. Pollinator Habitat

💶 €1.60 = 2 m² of pollinator habitat
Source: The Pollinators

This covers local wildflower seed mixes, ground preparation, and seeding: all pesticide-free and designed to last several years.

Conversion used:
€1 = 1.25 m² pollinator habitat

Each contribution helps rewild land for bees, butterflies, and countless other species essential to food production and biodiversity.

4. Soil Regeneration / Farmland Restoration

💶 €10 = 1 m² regenerated land
Source: Land van Ons

Your donations help convert degraded agricultural land into living soil using regenerative methods: reducing chemical use, boosting biodiversity, and improving water retention.

Conversion used:
€1 = 0.10 m² regenerated soil

5. Why These Ratios Are Used

Our goal is clarity and trust. The ratios we use meet three key principles:

1. Verifiable – every number comes from audited partner data.

2. Consistent – stable across time and project types.

3. Comprehensible – using intuitive ecological units everyone understands.

Ratios are recalibrated annually. If verified project costs change significantly, we update the metrics to stay accurate and transparent.

6. Important Distinction

These metrics don’t claim literal results: they show the equivalent environmental impact of your contribution, no matter which project you supported.

If you fund kelp restoration or a reforestation project, your dashboard displays results in these shared units. They reflect the value of your impact, not a specific number of trees or square meters funded by name.

Every euro you spend through Terry supports real, measurable restoration: tracked, verified, and updated transparently.

7. References and Sources

One Tree Planted - https://onetreeplanted.org/
The Pollinators –https://www.thepollinators.org/
Land van Ons –https://landvanons.nl/
Terry Blog –https://www.terry.earth/nl/blog