Hydrangea roots are not typically known for causing damage to pipes. In fact, the only reason a plant root might invade a pipe is if it detects water leaking from it. This is more likely to occur with sewage drain pipes rather than irrigation supply pipes.
Irrigation supply pipes are designed to be leak-free and are typically made of materials that are not easily penetrated by plant roots. Therefore, it is highly unlikely that your hydrangea roots will cause any harm to your irrigation pipes.
On the other hand, sewage drain pipes may occasionally develop small leaks or cracks, which can attract plant roots seeking moisture. However, this is still relatively rare and is more commonly seen with trees and larger plants with more aggressive root systems.
In the case of hydrangeas, their roots are generally not as invasive as those of certain tree species. Hydrangeas have a fibrous root system that spreads out horizontally rather than growing deep into the ground. This means that they are less likely to encounter and infiltrate pipes, especially if the pipes are properly sealed and maintained.
Personal Experience:
I have personally encountered situations where tree roots have caused damage to sewage drain pipes, but I have never seen hydrangea roots causing such issues. In my experience, hydrangeas are generally well-behaved plants when it comes to their root systems.
The chances of hydrangea roots damaging pipes, particularly irrigation supply pipes, are extremely low. While it is theoretically possible for plant roots to invade sewage drain pipes that have leaks or cracks, hydrangea roots are not typically aggressive or strong enough to cause significant damage. As long as the pipes are in good condition and properly maintained, you should not have to worry about your hydrangea roots causing any harm.
