The following material is Open Game Content from the Menace Manual SRD
Udoroots are enormous carnivorous plants that possess psionic powers. The bulk of an udoroot lies beneath the soil. Its massive, bulbous root system can reach down as far as 30 feet below the surface. The above-ground portion of the plant consists of six stalks, each topped by a single flower crown. These crowns resemble mature sunflowers with red seeds, white petals, and tough, woody stalks. They grow in a circle that can reach 20 feet in diameter.
An udoroot can be killed only by digging up or otherwise exposing its root, then burning it, hacking it apart, or totally destroying it in some other manner. Severing or psionically disabling all six crowns negates the plant’s ability to attack and makes excavation of the root easier. To sever a crown, an opponent must penetrate the woody bark of the stalk (hardness 5, hp 7). A severed crown dies, but the udoroot suffers no ill effects other than its absence. As long as the creature’s root remains intact, any severed crowns regrow in about a month. A psionic creature can also overcome a crown in psionic combat by reducing any one of the creature’s ability scores to 0. This attack does not harm the main root or any other crowns, which must be attacked separately to deal any damage.
Blindsight (Ex): An udoroot is blind but can ascertain all creatures and objects within 40 feet just as a sighted creature would. Beyond that range, all targets have total concealment with respect to the udoroot
Cold Resistance 20 (Ex): An udoroot ignores the first 20 points of cold damage from any single attack.
Immunities (Ex): An udoroot is immune to electricity and fire damage.
Plant: Udoroots have the traits and immunities common to plants.
Psionics (Sp): At will—false sensory input, lesser body adjustment, lightning strike, telekinesis. Manifester level 10th; save DC 10 + udoroot’s key ability modifier + power level.
Udoroot: CR 5; Huge plant; HD 6d8+18; hp 45; Mas —; Init +0; Spd 0 ft.; Defense 14, touch 8, flat-footed 14 (–2 size, +6 natural); BAB +4; Grap —; Atk none; Full Atk none; FS 5 ft. by 5 ft. per stalk; Reach 10 ft. per stalk; SQ blindsight 40 ft., cold resistance 20, immunities, plant, psionics; AL none; SV Fort +8, Ref +2, Will +3; AP 0; Rep +0; Str 3, Dex 10, Con 16, Int —, Wis 13, Cha 9.
Advancement: 7–16 HD (Huge); 17–32 HD (Gargantuan).
Advanced Udoroot: CR 8; Gargantuan plant; HD 17d8+85; hp 161; Mas —; Init +0; Spd 0 ft.; Defense 16, touch 6, flat-footed 16 (–4 size, +10 natural); BAB +12; Grap —; Atk none; Full Atk none; FS 5 ft. by 5 ft. per stalk; Reach 15 ft. per stalk; SQ cold resistance 20, blindsight 40 ft., immunities, plant, psionics; AL none; SV Fort +15, Ref +5, Will +6; AP 0; Rep +0; Str 11, Dex 10, Con 20, Int —, Wis 13, Cha 9.