Taken from EL Cheats and EL Wiki. Plus some ive found to be better locations.
List of harvestable items closest to storages
FLOWERS:
blue star flower: Naralik (110,80) or south of MM storage (106,92)(updated)
blue lupine: PL (206,162) 4 at a time (216,204)
impatients: PL (185,86) --> PL storage - manually measured time - oneway: 19s
white asiatic lilly: VOTD (22,120)
red snapdragon: VOTD (152,150)
tiger lilly: i find beaming to ip is just as close as any for these, they are by the ship then take to VOTD. if your def 26 then tg is closest (226,188)
lilacs: VOTD (38,151) --> VOTD storage - manually measured time - oneway: 17s
chrysanthemum: PORTLAND TAVERN 181.109
swamp candle: VOTD next to roses or Naralik (150,50) (updated)
red rose: VOTD (148,171)
yellow rose: DP (294,342)
black rose: DP crystal cave (153,31)
sunflower: MM north of storage. or (85,75) in Naralik. (updated)
cactus: DP (165,98)
daffodils: WS (590,180) close to docks.
nightshade: Naralik (170,127)
wormwood: Naralik (168,172)
hebane: Naralik (100,97)
white chanterelle: MM (123,93)
mullien: PL (210,145)
FOOD:
fruit: PL (180,97)
vegetable: PL same place as fruits.
MINERALS /CRYSTALS:
quartz: DP - Take telepad behind storage and the quartz are right at where it will take you. NC is abit further (53,32)
rose quartz: DP (330,55)
blue quartz: NC (107,60) --> NC storage - manually measured time - oneway: 58s
sulfur: MM northern cave (136,127)
coal: DP rat cave (42,25) also there is a cave at top of WS map to the right of NC entrance that has coal just as you enter the cave, you will need lvl 26 def since there are gargoyles in this cave.
iron ore: DP crystal cave (159,171) --> DP storage - manually measured time - oneway 1m 29s
silver ore: MM northern cave (99,126) --> WS storage - manually measured time - oneway: 1m 22s
gold ore: VOTD gold cave (74,39)
titanium ore: PL tit mine basment (172,62)
sapphire: PL cave to WS (33,137)
ruby: NC southern cave (8,87)
emerald: NA catacombs basement (140,23)
diamonds: WS gargoyle cave (81,87)
turquise: NC North Cave, warning this is in a PK area. Located near the entrance need a titanium pickaxe to harvest.
seridium: GP top left of map on a little island, beware high monsters here. Also need a matter conglo and titanium pickaxe to harvest. one more note you do not need a harvest cloak because it will only mine one at a time regardless.
Also a good trick for ores like iron and silver, plus minerals like blue quartz and sulfer, is to use tele to range in DP from behind storage to CC, also use a tele ring for DP once you are full from harvesting. trip both ways is less than 1 minute, thats if your willing to fork a little out for the ess and rings or make your own.