If you’re starting from seed, use 4-inch seed trays with seed compost. Lightly press the seeds into the compost. Do not cover the seeds with more compost once they are sown, since they require light to germinate. [2] X Research source Plan to plant the seedlings when they are a few inches tall.
Make sure to place your foxglove where it will get 3 to 6 hours of direct sun each day while it’s inside. Try a south or west-facing window. Cover the plant’s soil surface with a 2-inch deep layer of mulch. This will keep the soil moist. Water the plant deeply about twice each week, checking the soil first – if the soil is dry at a depth of two inches, water. Fertilize the foxglove once in the spring before it flowers, using a 10-10-10 water-soluble fertilizer. Mix in one tablespoon of fertilizer in a gallon of water for each plant.
You can use fertilizer instead of compost, but be sure to use a light application. Too much fertilizer will harm the foxglove. [5] X Research source
If you removed the central stalk to promote side shoots, you won’t be able to harvest seeds.
