Germination of passion flower seeds (Passiflora)

Seeds from passion flowers (Passiflora) are unfortunately known for being challenging to germinate. The seeds often contain countless inhibitors, which in nature ensure that the seeds do not sprout at the wrong time of year or under unfavorable conditions. However, this can make it a complex affair to get them to germinate on our windowsills and in greenhouses, and some seeds require very specific treatment. Here, we will provide some general tips on how to succeed in germinating your passion flower seeds. We use this method ourselves for the vast majority of our passion flower seeds.

1. Scarification: Most Passiflora seeds have a fairly thick shell. It can be an advantage to scarify the shell with a nail file or fine sandpaper. In particular, it is a good idea to sand a little along the seam of the seed. This can mimic the seed having passed through an animal, and older seeds may have difficulty gathering enough strength to break the shell if it has not been sanded first.
   
   
2. Soaking: It is a good idea to soak the seeds for 48-72 hours before they are sown. You can use lukewarm water and place them on a windowsill. Alternatively, you can soak them in passion fruit juice (our first choice). The fermentation that will occur in the juice can help remove additional inhibitors. Viable seeds will usually sink to the bottom. Seeds that still float can therefore potentially be discarded.

3. Sowing: The seeds are now sown in seed-starting soil or cactus soil. Alternatively, you can mix coconut coir and perlite. In the bottom of the pot, you can optionally add a little compost or other nutrients that the seeds can use once they have germinated. The seeds should be covered by approximately 1 cm of soil. Ensure that the soil is kept moist, but not wet.
   - You can also use the baggy germination method at this stage, where sphagnum moss in particular works well as a medium.

4. Incubation: Place the pot with seeds in a sealed bag (it is important that the humidity is very high). Place the pot in a warm spot, preferably up to 27 degrees Celsius.
   
   
5. Patience: Now it's just a matter of waiting and keeping your fingers crossed. This can be the most difficult period. Some seeds can take days or weeks to germinate. Other seeds can take many months. If it still doesn't work, you can potentially try letting the pots dry out completely, putting them in the refrigerator for about a month, and then trying again.
   
   
6. Acclimatization: When the small shoots start to sprout, they must slowly be acclimatized to lower humidity and more oxygen. Keep the pot in the plastic bag and slowly roll the plastic bag down over the pot over the course of a few days. Then place the pot with the plant in a bright spot with good air circulation.

Congratulations! You have now successfully germinated passion flower seeds. Check up on the individual species and their specific needs. However, the further care should be easier than getting the seed to germinate :) enjoy.

Further down you will find our large selection of passion flower seeds for sale.