Bulbs grow well in containers, including wooden boxes and raised beds. Since lights need well-drained dirt, growing in raised containers is actually better for several species than growing in the ground; it makes it easier to control the soil quality. Containers also protect bulbs from being consumed by burrowing rodents.
Containers used for bulbs need to have drainage holes. In case a wooden box has no drainage holes, drill a few in the bottom of the container before planting. The size of container is dependent upon the type and number of lights being implanted. As a rule of thumb, smaller bulbs need smaller containers and larger bulbs require more growing space. Bulbs that flower at different times can be planted at several levels within the planting box, and a box that’s 7 to 8 inches deep can accommodate two layers of lights. A pot 14 to 20 inches round will probably hold about 20 to 30 bulbs, based on the size and species.
Wooden boxes and containers work well for growing bulbs. The only disadvantage is that timber containers will eventually decay. Most untreated wood lasts at least 2 or three growing seasons. Redwood and cedar are rot-resistant, therefore growing boxes made from these forests will continue longer. Pressure-treated timber additionally has a longer lifespan, but you should be careful to avoid woods that were treated with toxic chemicals like creosote. Another option is to line the planting box with plastic to maintain growing roots and moist dirt from invading the timber. Just make certain that there are holes in the plastic that line with the timber box drainage holes so water won’t accumulate in the bottom of the container.
Bulb Planting Tips
In wooden containers utilized for growing bulbs, use lightweight potting soil mixture that drains quickly but still holds enough water to keep the roots moist. A commercial potting mixture works well enough, but if you want to mix your own potting soil specifically for bulbs, combine 2 parts good garden compost, 2 components regular potting mixture, 1 part perlite and 1 part coarse sand. Planting thickness for bulbs varies depending on the species, and instructions will be printed on the packages. Keep about 1/2 inch of distance between every bulb when planting multiple lights in a container.
Bulbs that need well-drained dirt and don’t spread quickly are the best for growing in wooden containers. Dwarf varieties of iris (Iris spp.) Grow well in pots because they need well-drained dirt. They’re hardy in U.S. Department of Agriculture plant hardiness zones 3 through 10, based on the species. For spring blooms, daffodils (Narcissus spp.) Also do quite well in pots. Fragrant varieties are available, and they come in a wide variety of colors. Avoid daffodils described as “naturalizing,” because they’ll spread too much for most pots. Daffodils are hardy in USDA zones 3 through 9.