Spring 2026

🚦 ALPHA Index - How good is your climate?

We’re excited to announce one of our most anticipated features - ALPHA index!

The ALPHA index removes the influence of light from EFFICIENCY, leaving only variation caused by changes in climate and irrigation. We do this by taking a moving five-day baseline of your plants to estimate what average performance would look like under the current lighting conditions, then subtracting that from the actual observed performance.

Inspired by the concept of "excess returns", ALPHA highlights when your climate control is driving performance beyond your typical strategy. A positive ALPHA indicates that your climate is exceeding baseline plant performance. A negative ALPHA, on the other hand, flags periods where climate conditions may be worse than normal.

This unlocks a new level of plant‑driven growing by allowing you to assess the strengths and weaknesses of your climate strategy, all at five‑minute resolution! With ALPHA, you can begin to answer practical questions such as:

• What is the most effective way to use misting?

• Is the greenhouse heating up fast enough in the morning?

• What is the impact of not supplying excess CO2 in the greenhouse?

• Where is the climate weakest across compartments?

• How can irrigation timing be improved?

ALPHA index is now available on all subscription tiers, we hope you like it and can’t wait to hear what you learn with it!

📈 Gardin is now integrated with LetsGrow!

Following our integrations with Ridder and Priva, Gardin data can now be accessed directly within LetsGrow dashboards. You can build custom views of Gardin indices to visualise plant photosynthesis data alongside your greenhouse climate data, giving you increased context of crop performance.

Third‑party integrations are available on our Plus tier. Upgrade now to bring Gardin data into your LetsGrow environment.