Plastic Bottles instead of Pea Gravel Pea gravel and pebbles can weigh down window boxes. Empty water bottles are a lightweight option. Place rinsed bottles inside the planter and add soil on top of them. The space between the bottles will allow proper drainage without the extra weight.
ENGLISH LAVENDER in a container: 1) Roots prefer to be fairly crowded so choose a container that is only 1-2" larger than rootball. 2) Full sun, 8 hrs/day. 3) Light soil w/good drainage. 4) Water when soil is dry. 5) Repot yearly with fertilizer. 6) Prune in spring before budding & again in summer