When growing lavender I mix peat free compost with some sharp sand and grit, My adding sand and grit you will make your compost much lighter and youll increate drainage. This will make your lavender Sheffield's Seed Company DIY Aged Painted Planters Easy Garden Project Laura Jade Prado Blue Crown Passion Flower Passion Fruit Passiflora Caerulea Orange Fruit Vine Seeds Organic Garden Seeds Pure Asia Seeds Large Pot fiberglass lightweight 23" to 63" diameters