Hey Vaclav, thanks for playing the game!
Here’s the solution if you’d like to take a look:
SPOILERS
- Full sun (both curtains): because the bud is red
- Trim to 2 leaves: full sun wants 1 leaf, closed flower wants +1 additional leaf
- Water once: closed flower does not add extra water
- Remove all weeds: still required from stage 2 onward