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
flagUkraine
44%
13%
22%
19%
61
flagRussia
40%
13%
36%
6%
30
flagNigeria
40%
30%
20%
10%
10
flagBelarus
33%
8%
41%
16%
12
flagPakistan
32%
10%
28%
28%
28
flagUnknown
27%
17%
24%
31%
29
flagthe United States
26%
11%
34%
27%
203
flagIndia
23%
19%
27%
28%
179
flagthe Philippines
23%
5%
41%
29%
17
flagPoland
22%
17%
28%
30%
7106
flagthe United Kingdom
22%
22%
35%
20%
54
flagGermany
16%
13%
32%
37%
43
flagCanada
16%
8%
33%
41%
12
flagAustria
5%
5%
55%
35%
20