Division guide
How to divide nettle-leaved mullein
How to divide nettle-leaved mullein
Lift the clump, shake off loose soil, then prise it apart — two forks back to back for a tough clump, hands or a knife for a softer one. Keep the vigorous outer sections and discard the tired centre.
Aftercare
Pot each division into fresh compost at the same depth it was growing before, water it in well, and keep it somewhere bright but out of direct sun for two to three weeks while new roots take hold. Do not feed straight away — damaged roots take up fertiliser poorly and it can scorch them.
The mistake to avoid
Splitting nettle-leaved mullein into too many small pieces. Each one then spends a season just recovering; three or four solid divisions beat a dozen weak ones.
More nettle-leaved mullein care
Dividing nettle-leaved mullein — FAQ
Can you divide nettle-leaved mullein?
Nettle-leaved Mullein forms a clump that thickens each year, and dividing it every few years keeps it vigorous — old clumps often die out in the middle and flower less. Lift the whole thing and split it into decent-sized pieces, each with a good share of roots and several shoots. Bigger divisions re-establish far faster than tiny ones.
When should I divide nettle-leaved mullein?
Early spring as growth restarts is the safest window; after flowering also works for many plants.
How do you divide nettle-leaved mullein?
Lift the clump, shake off loose soil, then prise it apart — two forks back to back for a tough clump, hands or a knife for a softer one. Keep the vigorous outer sections and discard the tired centre.
What do I do with nettle-leaved mullein after dividing it?
Pot each division into fresh compost at the same depth it was growing before, water it in well, and keep it somewhere bright but out of direct sun for two to three weeks while new roots take hold. Do not feed straight away — damaged roots take up fertiliser poorly and it can scorch them.