Germinating rose seeds and growing them into adult roses can be a rewarding but somewhat challenging process. Here are some general instructions to help you get started:

Seed Collection: Collect rose seeds from mature rose hips (the fruit of the rose plant) in late summer or early autumn when they are fully ripened. The hips should have turned a deep red or orange color. DONE PROFESSIONALLY
Seed Preparation: Gently extract the seeds from the rose hips and remove any surrounding pulp. Rinse the seeds under running water to clean them. DONE PROFESSIONALLY.
 

Stratification: Rose seeds require a period of cold stratification to break their dormancy and stimulate germination. There are two common methods for stratification:
a. Refrigerator Method: Place the clean seeds in a damp paper towel or in a ziplock bag with a moistened paper towel. Seal the bag and place it in the refrigerator at around 35-41°F (2-5°C) for 6-8 weeks. Check the moisture levels periodically and ensure the seeds don't dry out or become too wet.

b. Outdoor Method: Alternatively, you can sow the seeds directly in a prepared seedbed outdoors during the fall, so they naturally go through the cold winter temperatures. Protect the seedbed with a layer of mulch to prevent erosion and keep the seeds in place.

Seed Sowing: After stratification, sow the seeds in a well-draining potting mix. Use individual pots or seed trays, and plant the seeds about ¼ inch (0.6 cm) deep. Keep the soil lightly moist, but avoid overwatering to prevent seed rot.
Germination: Place the pots or trays in a warm location with indirect sunlight. The ideal temperature for germination is around 68-75°F (20-24°C). It may take several weeks or even months for the seeds to germinate, so be patient. Some varieties may take longer than others.
Seedling Care: Once the seedlings emerge, provide them with bright, indirect light. Ensure they receive at least 6-8 hours of sunlight or use fluorescent grow lights if necessary. Keep the soil consistently moist, but not waterlogged. Transplant the seedlings into individual pots when they develop their first true leaves.
Transplanting: When the seedlings have grown to a suitable size and the weather is favorable, you can transplant them into the garden. Choose a sunny location with well-draining soil. Dig a hole large enough to accommodate the root ball and plant the seedling, ensuring it sits at the same depth as it was in the pot.
Rose Care: Provide regular watering to establish the young rose plants. Apply mulch around the base to retain moisture and suppress weed growth. Fertilize the roses with a balanced rose fertilizer according to the package instructions. Prune the roses in early spring to encourage bushier growth and remove any dead or damaged branches.