Red Rugosa Rose Germination:
1) Soak seeds in 1 cup of water, with 1 tablespoon of hydrogen peroxide for 24hrs.
2) To cold stratify, place seeds inside of a zip lock bag filled with moist peat moss or vermiculite. (Not wet, just constantly moist). Leave the bag open an inch to allow for slight air circulation. Periodically mist them to ensure they don't dry out. Leave in the fridge for 60 days.
3) Plant seeds no more than 1/8 of an inch deep into a sterile seed starting mix.
4) Use a heated propagator mat to keep the temperature at 75 degrees F. during the day. Turn it off at night to allow temps to drop to 68 degrees or cooler. This creates alternating temperatures which mimic their natural conditions in the wild which greatly improves germination.
5) Keep slightly moist, and expect germination within 2-3 weeks.