I mentioned in last week’s Natural North Dakota that estimates for how many seeds a cottonwood tree could produce in a year may range up to 48 million. Clearly all those small seeds do not develop into cottonwood trees. But a very small number do fall on the ground with the right conditions of soil, moisture, sunlight, little competition, and other factors to become the next generation of cottonwood trees. It is a different story for some other plants — acorns from oak trees, for example.
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