Tulip bulbs should generally be planted about 6 to 8 inches (15 to 20 cm) deep. This depth is recommended to protect the bulbs from temperature fluctuations, pests like squirrels, and to encourage strong root development and healthy blooms
. A common rule of thumb is to plant bulbs at a depth about three times their height. For most tulip bulbs, this translates to roughly 5 to 7 inches deep, depending on bulb size
. Smaller species tulips can be planted shallower, around 4 to 5 inches deep, while larger bulbs require the full 6 to 8 inches
. When planting, place the bulbs pointy end up and space them about 4 to 8 inches apart, depending on the size of the bulbs and your desired display density
. In heavy or sandy soils, planting a bit deeper can help prevent drying out and improve growth
. In summary:
- Plant tulip bulbs 6-8 inches deep for most varieties.
- Use about three times the bulb height as a guide.
- Smaller species can be planted 4-5 inches deep.
- Space bulbs 4-8 inches apart.
- Plant pointy end up.
- Mulch after planting to protect bulbs and retain moisture.
This depth helps ensure good flowering and protects bulbs from pests and weather extremes
