Germinating lupine seeds can be a rewarding process. Here's a step-by-step guide on how to do it:

1.    Seed Selection: Choose high-quality lupine seeds from a reputable supplier. Fresh seeds typically have higher germination rates.

2.    Scarification (Optional): Lupine seeds have hard seed coats that can inhibit germination. To improve germination rates, you can scarify the seeds by lightly sanding or nicking the seed coat with a file or sandpaper. Alternatively, you can soak the seeds in warm water overnight before planting.

3.    Sowing Time: Lupine seeds can be sown outdoors in the spring after the last frost date in your area. Alternatively, you can start them indoors 6-8 weeks before the last frost date for earlier blooms.

4.    Container and Soil: Use clean, sterile containers with drainage holes if starting indoors. Fill the containers with a well-draining potting mix or seed starting mix. Lupines prefer slightly acidic to neutral soil.

5.    Sowing Seeds: Plant the lupine seeds about ¼ inch deep in the soil. Space the seeds 6-12 inches apart to allow for their mature size. Press the seeds lightly into the soil and cover them with a thin layer of soil.

6.    Moisture: Water the soil gently to ensure it is evenly moist but not waterlogged. Avoid allowing the soil to dry out completely, as this can inhibit germination.

7.    Temperature and Light: Place the containers in a location with full sun to partial shade. Lupine seeds germinate best at temperatures between 60-70°F (15-21°C).

8.    Germination Time: Keep an eye on the seeds, as germination typically takes 14-28 days, although it can sometimes take longer depending on the variety and conditions.

9.    Thinning: Once the seedlings have developed true leaves and are large enough to handle, thin them out to give each seedling enough space to grow without competition.

10.                  Transplanting (If Started Indoors): When the seedlings have grown large enough and the weather has warmed up, they can be transplanted into larger pots or directly into the garden. Harden off the seedlings by gradually exposing them to outdoor conditions before transplanting.

11.                  Outdoor Care: Plant the seedlings in a sunny location with well-draining soil. Water them regularly to keep the soil evenly moist, especially during dry periods. Mulching around the plants can help retain soil moisture and suppress weeds.

By following these steps, you should be able to successfully germinate lupine seeds and grow healthy seedlings that will eventually develop into beautiful flowering plants.

The average germination rate for lupine seeds can vary depending on several factors such as seed quality, age, environmental conditions, and specific lupine species or cultivars.

In optimal conditions, lupine seeds generally have a germination rate of around 70-90%.