Post #6 The Challenge To Survive

Post #6, The Challenge to Survive, marks the sixth post stop of the Rankin Ridge Nature Trail.

NPS Photo / Anania Tekurio

For a ponderosa pine seedling to eventually become a mature tree, it must survive many challenges. The cones of a ponderosa pine require two years to mature before releasing their seeds. Once released, the seeds must have the right conditions to germinate and grow. Growth depends on soil texture, plant competition, seedling condition, and moisture. Moisture is the critical factor. The ponderosa pine’s fast growing taproot seeks out moisture at many levels within the soil. But even before germination the seed may be eaten by mammals or birds.

If conditions are right, many seeds may germinate and the seedlings must compete for survival. Trees growing close together are called “doghair”. Fire is the major force that thins these doghair stands, allowing the surviving trees to get the required nutrients, moisture, and sunlight.