Planting Spring Bulbs in Missouri - Knowledgebase Question

Fenton, MO
Question by lhunt2
September 26, 1999
I'm a 1st time bulb planter. When do I plant Spring bulbs in Fenton, MO? Do you have tips/suggestions? Depths? Fertilizers? Full or part sun? Also, do I plant lily bulbs in Fall or the Spring?

Answer from NGA
September 26, 1999


You're in zone 6, so you want to have the bulbs in by mid October. If you have the lilies now, plant them. Lily bulbs are available in fall and spring, so if you buy them next spring, plant within a day or two, as they are ready to grow!

A rule of thumb for planting depth is soil covering the plant should be twice the height of the bulb. That means if the bulb is one inch tall, you'd need to dig a 3 inch hole--one inch for the bulb to sit in, plus 2 inches of soil on top.

Here?s some basic info on fertilizer and nutrients that plants require. The numbers on a fertilizer bag refer to the percentage of N (nitrogen), P (phosphorous), and K (potassium) in the bag. There are different formulations for different purposes. In general terms, nitrogen produces lush green growth, phosphorous helps strengthen stems and produce flowers, and potassium keeps the root system healthy. In reality, these elements work in conjunction with one another. If you're applying fertilizer to bulbs, for example, you're not as interested in the plant developing leaves as you are in it flowers, so you'd use a formulation lower in nitrogen and higher in phosphorous and potassium, such as a 5-10-10. Miracle-Gro's Plant Food at 15 30-15 is another example. Bone meal is an organic source of phosphorous. Since phosphorous doesn't move as readily through the soil as does nitrogen, it's a good idea to mix a small amount (follow package instructions) into the hole before transplanting, to mix it into the bottom of the planting hole. Also, keep adding compost every year. Organic matter is excellent for soil fertility and contains many essential trace elements, such as magnesium.

Most bulbs like full sun, but afternoon shade can also be appropriate. An excellent reference would be "Flowering Bulbs for Dummies" by Judy Glattstein. Good luck!

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