Marking Bulb Locations: Labels and Markers So You Do Not Dig Them Up
Marking bulb locations saves bulbs from a stray shovel. University of Minnesota Extension says to label what you planted plus where, so you do not dig up bulbs by mistake during spring garden work.
The short answer
Marking bulb locations means setting a label or marker where each group of bulbs sits. Minnesota Extension says to label what you planted plus where. Maryland Extension says to set a location marker in spring while foliage shows. Many spring bulbs are moved in fall after the leaves are gone.
Why mark where bulbs are planted?
Maryland says many spring blooming bulbs are moved in fall after the foliage disappears. By then they are hidden. A marker set in spring shows where to dig. Minnesota says a label also stops you from digging into bulbs during spring work. Minnesota likes wood plus wire tree labels. Write the cultivar name on the label plus record it in a notebook.
Spring marker: find bulbs in fall. Label: avoid digging. Notebook: record cultivars.
How deep do bulbs sit under a marker?
Minnesota says to plant bulbs two to three times deeper than their diameter. Light sandy soil allows a little more depth. Illinois says most large bulbs like tulips or daffodils go about 8 inches deep. Smaller bulbs go 3 to 4 inches deep. Illinois adds that some bulbs sit 6 to 8 inches down. Knowing depth helps you dig wide of a marked spot.
| Option | What it does | Source |
|---|---|---|
| Two to three times | Bulb depth rule | Planting bulbs |
| About 8 inches | Tulips plus daffodils | Planting bulbs |
| 3 to 4 inches | Small bulbs | Planting bulbs |
When should marked bulbs be moved?
Maryland says to move crowded bulbs only after the foliage fades. Bulbs dug earlier are of little use. Leave leaves on after flowering until they wither. Green leaves feed next year’s bulbs. Illinois says to interplant bulbs with annuals or set them behind low plants to hide fading foliage. Mark those beds so the annuals do not hide the spot.
Faded foliage: time to move. Green leaves: feed the bulb. Annuals: hide foliage.
Troubleshooting
Cannot find bulbs in fall? Maryland says to set a location marker in spring.
Forgot what you planted? Minnesota says to write the cultivar on the label.
Cut bulbs while digging? Check the depth rule from Minnesota plus dig wider.
Kind Seed Co shares these plant notes for growers of all kinds. For more on outdoor beds see fertilizer and compost for outdoor grows and frost damage on cannabis. Read fall garden cleanup after cannabis harvest for fall work. See mulch for cannabis for bed cover.
Sources
- Bulbs, University of Maryland Extension
- Planting bulbs, tubers and rhizomes, University of Minnesota Extension
- Planting bulbs, University of Illinois Extension
FAQ
What markers work for bulbs?
Minnesota Extension says wood plus wire tree labels work well for labeling.
When should bulbs be moved?
Maryland says to move bulbs only after the foliage has faded.
Should I cut bulb leaves after bloom?
No. Maryland says to wait until they start to wither so they can make food for next year.
How deep are most bulbs planted?
Minnesota says two to three times deeper than their diameter. Illinois says large bulbs go about 8 inches deep.
How can I hide fading bulb leaves?
Illinois suggests interplanting with annuals or placing bulbs behind lower plants.
