What steps are needed for weathering steel flower POTS?

Colton steel stage 

1.newly manufactured weathering steel. At this stage, a black oily residue coats the weathering steel.

2. stage-as weathering steel begins, oil residue begins to decompose. 

3. stages-the“Deciding stage”-take 3-9 months, depending on the weather and location. 

4.-the final stage of the weathering process. Some“Run-off” may still occur as the weathering steel patina develops into a striking, more consistent appearance.