This article is about level 140 Grotworms. For other types of Grotworms, see Grotworm (disambiguation).
This article has a strategy guide here.
|Release date||22 May 2012 (Update)|
|XP per kill||693.2 (and 228.7 experience)|
|Always drops||Big bones|
|Examine text||The final stage of a grotworm before its metamorphosis.|
|Assigned by||Turael or Spria, Mazchna or Achtryn, Chaeldar, Sumona, Vannaka, Duradel or Lapalok, Kuradal|
Mature grotworms are monsters that can be found on the bottom level of the Grotworm Lair. They have slow, but accurate and hard-hitting magic and melee attacks. However, magic attacks are only used on players outside of melee range, similar to monsters such as metal dragons and cockroach soldiers. It is possible to safespot them using the pillars if you stand far enough back from them. Lower-level players are recommended to bring high healing food such as monkfish or sharks. Ranged/magic would require Protect from Magic/Deflect Magic if using safe spots. The magic attack has a short range, so flashing your prayer when out of its range can help conserve prayer points. Despite their ranged weakness a player with 70+ melee stats should have little trouble killing them efficiently, even without the use of prayer.
Using high level ranged gear such as Armadyl and using a bunyip will reduce the need for prayer potions/flasks. The occasional Shark drops will reduce the need for food, and ranged gear will mean little damage from the mature grotworms' magic attack while ranging.
If a player tries to set up a cannon within the Grotworm Lair, they will receive a message saying: "The damp air would prevent your cannon operating." This does not prevent hand cannons from working, however.
Some players may find it useful to bring runes to cast High Level Alchemy on the items dropped by the grotworms, as adamant and rune equipment are common drops. The profit of using this spell on some of these items is greater than banking and selling them.
|Profit||Skill requirements||Other requirements||Experience|
80 or or recommended
|Song from the Depths recommended||120,000 |
Item Quantity Rarity GE Market Price Big bones 1 Always 524
- Represents 90% confidence range, based on a sample of 1,791 kills.
1 charm is dropped at a time.
- Please add to the log (only if 50 or more creatures killed).
Weapons and ArmourEdit
Item Quantity Rarity GE Market Price Adamant chainbody 1 Common 2,478 Adamant sq shield 1 Common 1,978 Rune dagger 1 Common 4,423 Rune helm 1 Common 10,803 Rune mace 1 Common 8,116 Rune longsword 1 Common 18,682 Royal cape 1 Uncommon 131
Item Quantity Rarity GE Market Price Grimy guam 1 Uncommon 521 Grimy harralander 1 Uncommon 199 Grimy tarromin 1 Uncommon 66 Grimy ranarr 1 Uncommon 1,935 Grimy irit 1 Uncommon 2,710 Grimy avantoe 1 Uncommon 4,838 Grimy kwuarm 1 Uncommon 2,568 Grimy marrentill 1 Uncommon 67 Grimy dwarf weed 1 Rare 11,798 Grimy cadantine 1 Rare 3,086 Grimy lantadyme 1 Rare 10,483
Item Quantity Rarity GE Market Price Cactus seed 1 Uncommon 25 Poison ivy seed 1 Uncommon 48 Avantoe seed 1–2 Uncommon 3,108–6,216 Dwarf weed seed 1 Very rare 57,365 Fellstalk seed 2 Uncommon 1,192 Cadantine seed 1 Uncommon 3,394 Irit seed 1 Uncommon 211 Belladonna seed 1 Uncommon 99 Toadflax seed 1 Uncommon 2,418 Kwuarm seed 1 Rare 328 Snapdragon seed 1 Rare 2,353 Lantadyme seed 1 Very rare 42,953 Torstol seed 1 Very rare 19,725
Item Quantity Rarity GE Market Price Flax 50 (noted) Common 1,450 Runite ore 1 Uncommon 10,323 Adamantite ore 3 (noted) Uncommon 9,582 Royal dragonhide 1 Uncommon 6,263
Item Quantity Rarity GE Market Price Coins 5,000 Common Not sold Shark 2 Common 3,036 Saradomin brew (2) 1 Common 91 Anagogic ort 20 Uncommon Not sold Blood rune 10, 50, 100, 150 Common 2,450–36,750 Law rune 10–45 Rare 3,070–13,815 Long bone 1 Rare Not sold Curved bone 1 Rare Not sold Spin ticket 1 Rare Not sold Clue scroll (hard) 1 Rare Not sold Rune bar 1 Very rare 13,044 Court summons 1 Very rare Not sold Starved ancient effigy 1 Very rare Not sold
Rare drop table dropsEdit
- This monster has access to the rare drop table.
The ring of wealth improves the chances when equipped but is not required to access the table.
Show/hide rare drop table Item Quantity Rarity GE Market Price Coins 250 – 450, 3,000, 9,000, 10,000, 12,000 Common Not sold Uncut sapphire 1 Common 1,593 Uncut emerald 1 Common 3,194 Uncut ruby 1 Common 4,507 Uncut diamond 1 Uncommon 8,304 Loop half of a key 1 Uncommon 25,471 Tooth half of a key 1 Uncommon 38,542 Uncut dragonstone 1 Rare 17,047 Dragonstone 1 Rare 10,275 Dragon dagger 1 Uncommon 16,889 Rune javelin 5 Rare 875 Adamant javelin 20 Very rare 1,060 Rune 2h sword 1 Very rare 37,872 Rune spear 1 Very rare 11,829 Dragon spear 1 Very rare 36,655 Dragon dagger 50 (noted) Very rare 844,450 Rune sq shield 1 Very rare 22,489 Rune kiteshield 1 Very rare 32,780 Shield left half 1 Very rare 66,610 Dragon helm 1 Very rare 59,627 Adamant bolts 200 Uncommon 15,000 Onyx bolts 150 Rare 1,279,050 Rune arrow 150–200, 500 Rare 22,200–74,000 Battlestaff 200 (noted) Rare 1,513,600 Air orb 1,000 (noted) Rare 3,477,000 Fire orb 1,000 (noted) Rare 3,131,000 Vecna skull 1 Very rare 90,518 Water talisman 1 Uncommon 9,145 Earth talisman 25–35 (noted) Uncommon 16,150–22,610 Fire talisman 25–35 (noted) Uncommon 72,875–102,025 Chaos talisman 1 Uncommon 101 Nature talisman 1 Uncommon 107 Pure essence 500–15,000 (noted) Uncommon 11,000–330,000 Nature rune 20–80 Rare 5,040–20,160 Soul rune 20 Rare 2,480 Law rune 45 Rare 13,815 Death rune 50, 121 Rare 4,800–11,616 Blood rune 50 Rare 12,250 Raw swordfish 125–250, 1,000 (noted) Uncommon 36,250–290,000 Raw shark 250–500 (noted) Uncommon 412,750–825,500 Big bones 150–500 (noted) Uncommon 78,600–262,000 Coal 150–7,500 (noted) Uncommon 24,450–1,222,500 Adamantite ore 150–800 (noted) Uncommon 479,100–2,555,200 Silver ore 100 (noted) Rare 10,600 Runite ore 100 (noted) Rare 1,032,300 Adamant bar 1,000–7,000 (noted) Rare 3,900,000–27,300,000 Rune bar 1, 50, 150 (noted) Rare 13,044–1,956,600 Clean ranarr 33 (noted) Uncommon 67,749 Clean toadflax 25–250 (noted) Uncommon 106,325–1,063,250 Clean snapdragon 30–120 (noted) Uncommon 127,710–510,840 Clean torstol 10–100 (noted) Uncommon 59,000–590,000 Saradomin brew (4) 250 (noted) Very rare 55,250 Watermelon seed 3 Uncommon 8,412 Yew seed 1–50 Rare 73,222–3,661,100 Magic seed 1–7 Rare 168,115–1,176,805 Palm tree seed 10 Rare 1,377,630 Snapdragon seed 1 Rare 2,353 Torstol seed 1–31 Rare 19,725–611,475 Fellstalk seed 2 Rare 1,192 Yew logs 100–20,000 (noted) Rare 48,800–9,760,000 Crystal triskelion fragment 1 1 Very rare Not sold Crystal triskelion fragment 2 1 Very rare Not sold Crystal triskelion fragment 3 1 Very rare Not sold
- When these creatures were first released, they did not drop items from the rare drop table, but did after the Queen Black Dragon update.
- The word 'grotworm' means caveworm in Dutch.
- Their examine text hints towards the possibility of the existence of a stronger grotworm based creature, although likely not an actual worm as "metamorphosis" implies, but none were released with them.
- On 17 June 2013, these monsters received a massive power increase. Their lifepoints more than tripled, their accuracy was increased greatly, and their damage output was made substantially higher. This considerably decreased the amount of botting and people in general coming to the grotworms for money.
- On the same 17 June 2013 update, the slayer experience rewarded increased from 73 to 360.5, to compensate for their increased strength.
- Due to excessive botting, an update on 7 August 2012 removed several rune armour drops from the drop table of mature grotworms, replacing them with their adamant counterparts, making it less effective to earn money. The same update also removed royal bolts and super restore potions from their drop tables.