I don't think it would hurt to remove those tubers. Members of the Asparagus family are very tough. It will just grow more. We used to take care of the flower beds at church and it was full of the regular asparagus fern. We never could kill it all.

Jane, they have a very thick, dense, fibrous root. After asking the same question here a few years ago, at the advice of others, I unpotted mine and sawed it into four sections using a small pruning hand-saw. Good luck! Please give us before and after photos if you can. :) Carol in Jacksonville

Well, I got curious and found this tidbit here: "WATER: Increased need when root-bound; turns yellow (and dead) when thirsty, brown when over-watered." This site says a little more: First it says: "Over the course of the growing season, foxtail fern stalks dry up and turn brown as they age. It's a natural part of the growing process and there's no need to pull out the plants. As with all perennials, as the old stalks die, they are replaced with new shoots that grow from the roots. In cooler areas, winter frosts may kill all the fronds, but new shoots grow the following spring." But then there's this: "Root rot, a fungal disease that damages the roots, results in dried up, dead-looking foxtail ferns. But unless the roots die, foxtail ferns can recover. Wet soil is the primary cause of root rot. Stop watering long enough to let the soil dry out and cut back and dead-looking stalks." What I take from all of that is that if vegetation is dry it's just old and dead, and if it's browned but not dry, the cause is overwatering. So, when you say you make sure it's dry before watering, do you just feel the surface or do you check soil moisture deep down in the pot? Is it in fine grained water retentive soil? Does the pot have a drain hole? Roots need air, so moisture control is a key factor for any plant's health. Like many around here I use a sharpened dowel to check soil moisture (a wooden skewer or disposable chopstick also works). I push it through the soil all the way to the bottom of the pot and don't water until it's dry to the touch (at which point there's still substantial water inside soil particles that the p roots can access). Then I water thoroughly, let it drain normally, and then tilt the pot 45 degrees to drain out additional excess water and reduce the amount of water that's saturated. I can post links and details if you think it would help...

Here in south Texas we can plant these in the ground and they come back every spring. They enjoy extreme heat and can tolerate drought. From the pics, I would say yours wants much more sunlight and time to dry out between watering. Don't water until a chopstick/skewer shoved all the way down to the bottom of the pot comes out mostly dry. You may want to investigate supplemental light if you don't have a window you can put it closer to.