If you're doing any kind of gardening, you can find the root system of many common plants and weeds. Some examples:
- bindweed: https://images.wur.nl/digital/collection/coll13/id/193/rec/1 the white meaty rhizomes go at about 10 cm but the actual roots can go much much deeper (2.2 meters in this example)
- horsetail: https://images.wur.nl/digital/collection/coll13/id/753/rec/1 also grows deep roots; extremely sturdy - resists many herbicides and can spread through spores.
- goutweed: https://images.wur.nl/digital/collection/coll13/id/1435/rec/... dense network of thin roots
- dandelion: https://images.wur.nl/digital/collection/coll13/id/676/rec/2 this example has roots reaching 4.5 meters!
- potato: https://images.wur.nl/digital/collection/coll13/id/1014/rec/... was looking for a tomato plant but found this instead (they are the same genus); you can see the tubers too.
- carrot: https://images.wur.nl/digital/collection/coll13/id/1049/rec/... the edible taproot is not the only part