- The Douglas fir is a so-called heart root
- The development of the roots
- Flexible adaptation to site conditions
- Attention: sensitive roots!
- Suitable location for roots
The Douglas fir grows quickly and reaches a stately size. At the same time, a root system must develop in the soil that does justice to this tree, supplies it with water and nutrients and at the same time gives it a firm footing. Let's take a closer look at the root.

The Douglas fir is a so-called heart root
Plants of all kinds are classified as shallow-rooted and deep-rooted, depending on how their roots spread into the soil. The larch does not belong in either category alone, as it has both deep and shallow roots. This combination of different roots is also known as the heart root system.
The heart is the namesake because the cross-section of the root system is reminiscent of a heart shape when viewed from the side.
The development of the roots
When young, the Douglas fir forms deep taproots that branch out in all directions. This is also necessary because this type of tree grows quickly and therefore needs good anchoring. This means that even a strong wind cannot bring down the Douglas fir.
Flat roots follow later, so that the entire soil is conquered across the board. The deep roots also make this tree less sensitive to drought, as it can still get water from the depths.
The root system of a Douglas fir spreads out at a depth of approx. 1.5 m.
Flexible adaptation to site conditions
A tree is a living being that does not form its roots according to a rigid plan. He reacts to some environmental factors and adapts to them as best he can.
- permeable soil makes deep roots possible
- nutrient-rich surface encourages shallow roots
Attention: sensitive roots!
Young Douglas firs have sensitive roots that can dry out quickly if left unprotected. Therefore, if possible, do not buy bare-root trees to minimize the risk. The Douglas fir is difficult to compensate for root damage.
Suitable location for roots
The older a Douglas fir gets, the bigger and stronger its root system develops. At the beginning, this circumstance will neither be visible nor cause any problems. However, if the Douglas fir is inappropriate, its roots can soon become a threat.
- Tree should not be too close to buildings
- watch out for nearby underground lines
The power that a root can develop should not be underestimated. She will emerge victorious from a duel with a lead, and that can be costly.