Questions tagged [pines]

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16
votes
1answer
10k views

Does a pine needle mulch make your soil acidic?

This article from Colorado State University states that alkaline soils resist change but several years of heavy pine needle applications would create a somewhat more acid soil. This article ...
11
votes
4answers
91k views

How far will pine tree roots spread?

I have a very tall pine tree in front of my house. I am about to start work digging up my downstairs floor and re-doing it. I'm just wandering if before I start I should look further into the roots of ...
6
votes
2answers
3k views

What is the effect of candling pine evergreens?

I recently purchased a dwarf evergreen (a Japanese White Hagoromo and a Japanese Black Pine) and was instructed by the salesman to twist off all of the "candles" at about the halfway point once they ...
6
votes
4answers
14k views

Why does my Norfolk Island pine tree have brown needles and drooping branches?

My Norfolk Island pine is not doing so well; the needles are turning brown and the branches are drooping. Why did this happen to my plant, and how can I cure it? Click photos for full size