When Foxglove finally flower do the spikes left go to seed?

1. Cover the foxglove flower stalk, after the flowers begin to die, with a cheesecloth bag or the cutoff leg from an old pair of pantyhose. Clip the opening of the bag closed around the foxglove stem with a paper clip.
2. Cut off the entire stem after the seed pods begin to dry and open on their own. The bag covering the flower head prevents the seeds from being lost in the garden.
3. Dry the flower spikes inside the bag for one week so the seed pods can finish opening. Dry them in a dark, well-ventilated and low-humidity location.
4. Open the bag and remove the flower spike. Empty the seeds from the bag into a bowl and remove any remaining seeds from the pods on the spike.
5. Pick out any leaves, old petals and other plant debris from the collected seeds. Transfer the seeds to a jar and seal the lid closed. Label the jar with the foxglove variety and collection date. Store the seeds in a cool, dark location until planting time.

Sorry about that mess. I looked fine until it was submitted. For some reason by submitting the info the setup was changed.

Yes, they spread.

I agree with Mog, that is the best way to collect the seeds. They are very small and could end up going everywhere in the garden when the pods dry and open up. I made that mistake and couldn't tell if it was the foxglove or a weed popping up the next spring.

Hello there, Yes, If flower is left it will make seed.