house plant repotting

Plastic generally helps hold in moisture. Depends what kind of plant you are repotting. Unless it's in the miniature category you can use from a 4 inch size pot. Keep in mind that if the plant you're repotting is a flowering type it's best that you don't plant it in a huge pot because it might not flower. Some varieties like their roots compacted.

Heres a list of soil mix recipes for repotting and rooting Epiphyllums by Mattslandscape.com

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The ericaceous type is the kind of compost that hydrangeas need for repotting. The shrubs in question prefer soils whose pH level is slightly acidic. They therefore require the kinds of amendments, composts, fertilizers, mulches, and soils favored by azaleas, heathers, and rhododendrons.