In the fall - plant spring bulbs in pots. Store the potted bulbs in an unheated garage or storage room. Youll need to water every few weeks since the pots wont have access to rainfall. Pack bulbs shoulder-to-shoulder in big containers for an abundant display in spring. Toss aside the spacing recommendations so you can get as many bulbs into the container as will fit.
Bulb planting depths vary depending on their size and species; but as a rule of thumb, most bulbs can be planted at a depth of approximately 3 times their own height. This explains some of my frustrations!
Place bulbs shoulder to shoulder across the surface of the soil, leaving no space between them. Then top off with more potting soil so the bulbs are just slightly below the surface. Water each container thoroughly, and finish with a layer of mulch.