How long does it take for a Douglas fir to be ready harvesting?

The time it takes for a Douglas fir to be ready for harvesting varies depending on a number of factors, including:

* Intended use: Timber for lumber, pulp, or plywood will require different ages and sizes.

* Site conditions: Soil quality, sunlight, rainfall, and other factors affect growth rates.

* Management practices: Thinning, fertilization, and other techniques can influence the rate of growth.

Generally, here's a breakdown of typical harvest ages:

* Pulpwood: 25-35 years

* Lumber: 40-60 years

* High-quality lumber: 80 years or more

Note: It's essential to consider sustainable forestry practices. Harvesting too young can lead to lower quality timber and depletion of the forest, while harvesting too old can result in wasted growth potential.

For the most accurate information on harvest times for a specific Douglas fir stand, consult a professional forester.