How to Layer Bulbs in Containers 
- First put in a foundation of drainage material and soil.
- Eight inches from the top of the container, add large bulbs like tulips, gladioli, cannas, lilies, etc. Position bulbs close together - so they are touching each other but NOT the side of the container.
- Add three inches of soil.
- On this layer, plant small bulbs like grape hyacinths, calla lilies, etc.
- Top with three to four more inches of soil, and an inch of mulch. You can skip the mulch and also plant a groundcover over the surface of the soil if desired.
- Water in well.
For spring bulbs, protect the container from extremes of cold. Keep summer blooming bulbs well watered and fed.
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