How to Collect Hoary Vervain Seeds | Easy Native Plant Seed Saving, by Bright Lane Gardens on YouTube. 13 min 5 s.
- Video length
- 13 min 5 s
- Time to do it
- 30 minutes
- Difficulty
- Easy
- Steps
- 10
What you need
Steps
Check the plants in late summer or early fall. The purple flowers should be gone and the narrow spikes turned brown and dry. Seeds are ready when the spike feels papery and the tiny seeds loosen when you rub it.
Pick only fully brown, dry seed heads. Leave green or partly green spikes on the plant to finish ripening. Choose a dry day, ideally a few days after rain, so the heads are not damp.
Hold a paper bag or envelope under the spike and snip it off with your fingers or small scissors. Drop each head straight into the bag so loose seed does not scatter.
Label the bag with the plant name and the date you collected. If you are saving seed from several species, keep each one in its own labeled bag.
Spread the heads on a tray or in a shallow bowl in a dry room for a week or two. This lets any remaining moisture leave the plant material before you clean it.
Rub the dried spikes between your fingers over the tray. The tiny seeds separate from the chaff and fall to the bottom. Work slowly so you do not crush the seed.
Pour the mix through a fine sieve or pick out the larger stems and chaff by hand. Hoary Vervain seed is very small, so a light shake over a bowl works better than blowing on it.
Let the cleaned seed sit in an open container in a dry, ventilated spot for about a week. Stir it once or twice so it dries evenly.
Store the seed in a labeled glass jar with a tight lid or a paper envelope kept in a cool, dark, dry place. Add a small silica packet if your room is humid.
Sow the seed in fall or cold-stratify it in the fridge for about 30 days before spring planting. Surface-sow and press the seed in, since it needs light to germinate.
Tips and common mistakes
Collect from plants you know are Hoary Vervain, and avoid picking from roadsides where plants may be sprayed.
Never seal damp seed in a jar, because mold will ruin the whole batch.
Leave some seed heads on the plant so birds and insects still have food.
Tiny seed blows away easily, so clean it indoors or on a still day.
Questions
How do I know the seed is ripe?
The flower spike turns brown and dry, and the small seeds loosen when you rub the spike. Green spikes are not ready yet.
How long does the seed stay good?
Stored cool and dry in a sealed jar, native Vervain seed usually keeps for a few years. Label it with the year so you use the oldest first.
Do I need to cold-stratify the seed?
Hoary Vervain seed germinates best after a cold, moist period. Sow outdoors in fall or keep it in the fridge for about 30 days before spring sowing.
This guide was drafted from the video's details and general task knowledge. It has not been checked against the full video. Check the video and relevant product instructions before following a procedure. Report a correction.
