Rosa palustris

Seeds Type

Orthodox, that is to say seeds with the capability to withstand desiccation and freezing temperatures (-20°C) and may therefore be conserved for years, if not decades.

For germination, you must...

1. allow FIVE MONTHS for seed treatment;
2. subject them to a thermal scarification AND a warm stratification, THEN a cold stratification, before sowing (follow the steps below in order).

Thermal Scarification : Soak the achenes in hot tap water (around 60 ° C) and let the water cool normally for 24 hours. Following this process, several seeds should have swelled from their original size. Repeat this step for the seeds that have not changed in size and therefore have not been scarified properly.
Stratification (warm and cold) : Place the achenes in a bag (Ziploc Slider type) containing slightly premoistened peat moss. Seeds should be surrounded by the latter. Close the bag and place it at room temperature for about two months, then in cool storage (between 1°C and 5°C) for approximately three months.
Seedlings : Remove the content from the bag and sow the achenes by broadcasting the mix on the growth medium. Bury lightly, less than five millimeters from the soil surface.

⚠ Hard to germinate ⚠

Seeds from this species are often impervious to water and, then, may delay the germination. The latter may occur several months after sowing. It’s important to not throw seeds away if they didn’t germinate after the first attempt. Repeating all the germination process could be necessary.