Fable III

This video i found a million times more helpful than the 4 posted above. It shows an entire walkthrough to get to flowers in 1 take instead of taking several cuts.
Credit goes to IaFaKeClanI

These five video's are the best I have found.

*On the first video, if you don't have a fence, it is near the shrine (on the right) that is up the same path

Follow that guide: you'll got them in a row, also if you already picked up someone.

The City of Aurora
1 Blue Flower - From the docks, dive into the water and swim to a strip of land on the left.
2 Green Flower - Climbing the hill towards the top of the town, you'll pass between two flags. The flower is near the base of the flag on the right. This area is also directly left of the Demon Door.
3 Orange Flower - Start at the steps of where you got your quest. Go to the path on the right.Follow the path until you see 2 angels. Go inside the shrine and to the right is a small path. do not go up it. On the right behind a broken pillar is the flower.The two angels appear if you did not build a mine if you built a mine go to the gate [Do not go in the mine] and turn right.
4 Yellow Flower - Start at the steps of the temple where you retrieve your quest. Walk foward and you will see a fork in the road. Take the path on the right and walk a bit until you see an opening leading to Sandsky house. To the right of the house is a little room. Go in there.
5 Purple Flower - Behind the Cold Star Manor. From the front entrance of the building, proceed to the right to get behind the manor.

Shifting Sands
1 Yellow Flower - When you first enter the area, there will be a long set of stairs with pillars lining both sides. This flower is behind the farthest pillar on the right.
2 Orange Flower - As soon as you enter the region from Aurora, veer left and follow the wall.
3 Purple Flower - Follow the path to the right from the Aurora zone-in. You'll come across an alcove with a diagonal pillar in the center of it; the flower is right beside it.
4 Yellow Flower - Proceed past the diagonal pillar towards the huge stone arch that looms overhead. Right before passing under the arch, hang a sharp left up an incline. If you allowed the army fort to be built in Aurora that is beneath the stone arch.
5 Purple Flower - Go under the arch and past the fort if you chose to build it and take an immediate right. This flower is in a sunken dip of land between two dunes.
6 Orange Flower - After passing under the arch from the Aurora side, past the fort, look for a jagged slanted rock jutting out of a sand dune, with another small rock next to it. They should be directly in front of you from the arch. The flower is next to the smaller rock.
7 Blue Flower - After going through the arch and fort (if you decided to build it) take an immediate left and hug the wall and follow it for a long while. The flower is on a hill in the northwestern corner.

The Veiled Path
1 Blue Flower - On the right as soon as you enter the area.
2 Orange Flower - On the right when the area opens up - after the first solitary archangel statue on the right.
3 Purple Flower - On the left side when the area opens up - after the first solitary archangel statue on the left, at the top of a short flight of stairs leading to an unopenable door.
4 Red Flower - Turn 180 degrees from #3, and go straight until you see two rows of statues on either side of the path - 4 on the right two on the left. It is at the base of the statues on the left.
5 Orange Flower - proceed onwards after #4, and climb a short flight of stairs to a ledge on the left.
6 Purple Flower - Hop down from the ledge and follow the sandy path alongside a wide flight of steps. It is just past the steps on the left.
7 Yellow Flower - Follow the pathway forwards from #6, and after the first flight of steps, it is on the right. It's right after you fight the first batch of animated bird statues, and within hearing distance of a gnome. There are three archangel statues looking down at this spot.
8 Yellow Flower - Climb another set of steps, fight another batch of bird statues, and then this is on the right side at the base of the next flight of steps (now standing behind the aforementioned 3 archangels).
9 Blue Flower - Up the long stretch of stairs from #8. Left hand side, after the two archangel statues standing in the middle of the staircase.
10 Red Flower - A few more flights of stairs up from #9. Left hand side, under a stone overhang, after the last leaning pillar on the left.
11 Green Flower - Right side at the base of the massive doors at the top of the staircase.

Sandfall Palace
1 Red Flower - Descend the first set of stairs and the flower is in a small pile of sand to your right.
2 Green Flower - At the first branching path, where you can either take stairs ahead of you or to the left, take the left stairway down to a pond. The flower is behind a tree by the water.
3 Green Flower - Double back to the branching path and take the alternate set of stairs. Keep going straight across the walkway and through an enclosed passage that leads to the second large room of the palace. Head left through the trees and keep an eye out for a giant semi-circle structure. The flower is in a grassy patch right by the structure.
4 Blue Flower - To the right of the first set of stairs in the second large room, past more circular architecture, is a shrine housing the flower.
5 Red Flower - After entering the third large room, hug the wall to the right to find a door. Immediately to the left after entering that door is the last flower in the palace.

The Enigma
1 Green Flower - In the centre of the first room after the first treasure chest, can't miss it.
2 Red Flower - In this room, there are unlit torches that correspond to the various side chambers. Use the Fireball gauntlet to light the torch on the left to open the next door, and the last flower is right out in the open of the adjacent room.

Return to the city of Aurora after retrieving the Desert Star diamond and accept the Temples Treasure quest. There are 5 of six different colors of flowers, green, red, blue, purple, orange, yellow. You can find the flowers scattered throughout Aurora City, Shifting Sands, Sandfall Palace, The Veiled Path, and The Enigma. As long as your dog is at lvl 3 exploration or higher he will sniff them out.

A small table for your convience:

aurora, shifting sands, sandfall palace, veiled path, enigma
G 1 , 0 , 2 , 1, 1
R 0 , 0, 2 , 2 , 1
B 1 , 1 , 1 , 2 , 0
P 1 , 2 , 0 , 2 , 0
O 1 , 2 , 0 , 2 , 0
Y 1 , 2 , 0 , 2 , 0

KEY: G= green, R= red, B= blue, P= purple, O= orange, Y= yellow. the six different colors of flowers you will find.
Sorry i dont have screen shots or video.

If you are missing some flowers, but not sure which ones, you can activate a quest where you have to give the flowers back to be made into dyes. You can only give it back once you have 5 flowers for each color. So the color you don't give back to be made into dye is the one you are missing. It does not tell you how many flowers of each color you are missing, just that you are missing 1 or more.