Soil Added Over Bulb Beds - Knowledgebase Question

Milwaukee, WI
Question by familyz
November 20, 1997
I recently added about four inches of top soil to my flower bed. Will the additional soil do anything to my spring bulbs, which are planted beneath?


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Answer from NGA
November 20, 1997

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Your bulbs will most likely be fine if their depth isn't deeper than 12" deep. Planting depths given by bulb suppliers are generally for folks who intend to "lift" the bulbs. If your bulbs are naturalized, i.e., you leave them in place season to season you can add approximately 3-4" of depth to the supplier's recommendations. If the added top soil puts them much deeper than 12", I would probably dig them and replant at a lesser depth.

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