Great question! Four days is still within the average, but it’s starting to be the limit for most good seeds to germinate.
Here are some possibilities and tips:
1. They may still germinate
Some seeds take up to 5–7 days, especially if they are older or have a harder shell.
Make sure the paper is damp (not soaked), and the environment is between 22–26°C.
2. There may have been an issue with the conditions
If the paper dried out or got soaked, that could kill the seed.
Very low or high temperatures can also interfere.
3. Give it one last chance
Check if the seed is still firm to the touch (not mushy or smelling bad).
If everything is okay, wait another 2 days.
If you want to help, you can VERY carefully “sand” the shell lightly or place them in a cup of warm water for 12 hours before going back to the paper.
If you’d like, I can help you set up a step-by-step method to ensure maximum germination next time too. Want that?