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
60%
8%
13%
17%
23
flagKazakhstan
57%
10%
15%
15%
19
flagBelarus
41%
5%
35%
17%
17
flagNigeria
41%
25%
16%
16%
12
flagUkraine
39%
11%
28%
21%
89
flagRussia
32%
14%
35%
15%
70
flagPakistan
32%
10%
28%
28%
28
flagRepublic of Ireland
28%
14%
21%
35%
14
flagUnknown
27%
17%
24%
31%
29
flagSwitzerland
27%
18%
18%
36%
11
flagthe United States
25%
12%
33%
27%
216
flagPoland
23%
17%
28%
30%
7413
flagIndia
22%
19%
27%
29%
192
flagGermany
22%
12%
34%
27%
108
flagthe Philippines
22%
11%
38%
27%
18
flagthe United Kingdom
21%
21%
36%
21%
61
flagAustria
18%
22%
33%
25%
48
flagCanada
15%
7%
38%
38%
13