How deep is the root system of a giant sequoia?

4 meters (13 feet)
20 meters (60 feet)
40 meters (130 feet)
80 meters (260 feet)
The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil.
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Answers by country

4 meters (13 feet)
20 meters (60 feet)
40 meters (130 feet)
80 meters (260 feet)
answers
flagAustralia
62%
10%
20%
6%
29
flagGreece
62%
8%
12%
16%
24
flagKazakhstan
55%
14%
11%
18%
27
flagBelarus
42%
5%
31%
15%
19
flagNigeria
41%
25%
16%
16%
12
flagUkraine
39%
11%
26%
21%
101
flagEstonia
36%
18%
18%
27%
11
flagRussia
32%
14%
37%
14%
77
flagPakistan
30%
10%
30%
30%
30
flagSwitzerland
28%
14%
14%
42%
14
flagUnknown
27%
17%
24%
31%
29
flagthe United Kingdom
26%
18%
34%
20%
69
flagRepublic of Ireland
26%
13%
20%
40%
15
flagthe United States
25%
12%
33%
27%
225
flagPoland
23%
17%
28%
30%
7515
flagIndia
22%
19%
27%
29%
194
flagthe Philippines
22%
11%
38%
27%
18
flagGermany
21%
12%
33%
30%
119
flagAustria
18%
24%
32%
24%
49
flagCanada
14%
7%
42%
35%
14