**2. Hollow Or Hollowed-Out Stems:** - Leave some stems aft…
**2. Hollow Or Hollowed-Out Stems:**
- Leave some stems after pruning flowers like sunflowers, teasels, or elderberry. Solitary bees can use these hollow stems as nesting sites.
**2. Hollow Or Hollowed-Out Stems:**
- Leave some stems after pruning flowers like sunflowers, teasels, or elderberry. Solitary bees can use these hollow stems as nesting sites.