The seeds of a clematis are among the cold germs. In order to be put in the mood for germination at all, stratification is essential before sowing. You can find out here how this procedure works and how the cotyledons are lured out.
How is Clematis seed stratified?
Stratification is a wet-cold treatment that simulates winter weather conditions for the seeds of a clematis. Mother Nature equips the seeds with a germination inhibitor so that they do not sprout in the middle of winter. Only when they experience a cold stimulus do the cotyledons break through the seed coat. The process can be easily implemented using a refrigerator. Here's how to do it:
- Spread a mix of peat and sand on cling film and spray with water
- Spread the clematis seeds on top
- Roll the foil into a roll and tie the ends tightly
- Place in the vegetable drawer of the fridge for 6-8 weeks
In the course of stratification, the moisture content of the substrate is checked every few days, because germination does not occur in dry soil. Germinating seeds are sorted out and sown in the classic way.
Stratification in the field - this is how it works
If the housewife rebels against the besieging of the refrigerator with seeds of a clematis, this alternative for propagation by sowing offers itself:
- Small growing pots (€16.68) fill with peat sand, herbal soil or commercial seed soil
- Place one seed per pot on the moistened substrate and sieve 3-5 mm high
- Put a glass or transparent hood over each seed and carry the seed pots outside
- Place in a partially shaded, sheltered spot throughout the winter
While the seed goes through the cold cycle, the glass hood is aired daily to prevent mold from forming. Regular watering is also required so that the soil does not dry out. If the seeds are from a wild species, you can usually look forward to the first seedlings as early as next spring.
tips and tricks
Since the germination of the seeds of clematis hybrids can take up to 3 years, meticulous cleanliness is the top priority for a successful process. Therefore, not only disinfect all equipment and tools, but also the substrate. You can do this in the oven at 150 degrees within 30 minutes or in the microwave at 800 watts within 10 minutes.