From seed to evidence
Seed Lab.
Seed Germination Tracker & Experiment Planner
Lay out a balanced A/B tray, mark newly observed seedlings and watch the germination curves develop. Keep the observations and their uncertainty together.
Watch the tray wake up.
Click a cell on the date you first observe germination. Marked cells show a leaf; click again to remove the mark. Keep your definition of germination consistent.
DEMONSTRATION DATA · These are invented example observations, not an experiment conducted by Plantedwell.
Observations remain in this browser. Download a JSON backup to restore elsewhere.
The story in the numbers.
Intervals assume independent binary outcomes. A single shared tray is not automatically replicated evidence for a treatment effect. Timing is the day germination was observed, not necessarily the moment it happened.
Make the result
mean something.
How to use Seed Lab
- Set the tray dimensions, sowing date, group labels and randomisation seed. Start a fresh tray when ready.
- Set the observation date and mark cells when germination is first observed. Clicking a marked cell removes that entry.
- Compare cumulative percentages and observed timing. Export a JSON backup or CSV, and keep the conditions and limitations with your result.
A worked example
With 8 observed germinations out of 30 seeds, the observed proportion is 26.7%; a 95% Wilson interval is approximately 14.2–44.4%. That interval is about a binomial proportion under its assumptions, not proof of a treatment effect.
Assumptions and scope
A/B cells in one tray may share conditions and are not automatically independent experimental replicates. Missing observation days affect the measured timing. The “50% of seeds sown” day is not the same metric as T50 based on final germination. No claim of treatment causality is made.
Primary method or data reference ↗
Results use the entered values and the method described here. Keep units, sampling conditions and the source of the data with your interpretation.