Light materials you can use to fill the bottom of your large planter include:
- Water/soda bottles.
- Water or milk jugs (lids on, if possible)
- Solo cups (turned upside down)
- Take-out plastic food containers.
- Empty detergent bottles.
- Nursery pots and 6-packs (turned upside down)
- Unused plastic pots (turned upside down)
How do you fill tall planter pots?
How to Fill a Tall Planter
- Check your planter for a drainage hole at the bottom. …
- Fill the bottom half of the planter with space savers instead of potting soil. …
- Separate the filler from the soil with a layer of newspaper, cheesecloth or landscaping fabric.
- Add potting soil to the planter, leaving a few inches at the top.
How do you line a large planter?
Line the entire planter with a sheet of plastic, trimming it so that it reaches but does not go over the rim. Staple the plastic all the way around the rim. Using a screwdriver or sharp stick, poke through the drilled drainage holes to let excess water drain out of the plastic liner.
Bottom Line on Foam
Foam doesn’t break down easily in the environment, which means it’s unlikely to degrade in a vegetable gardening container so it’s safe to use as filler.
Some experts suggest using a layer of pebbles as a sort of drainage layer in those pots without drainage holes. This technique allows excess water to flow into the space with the pebbles, away from the the soil and therefore the roots of your plant.
Can I use Styrofoam instead of perlite?
According to many experienced gardeners, Styrofoam can be used instead of perlite. However, it must be the correct kind of Styrofoam, and there are serious environmental considerations to take into account.
How do you fill a large wooden planter box?
Possibilities include crushed aluminum cans, plastic milk jugs, plastic water bottles, plastic soda pop bottles and crunched, empty potting soil and soil amendment bags. Upending a stack of nursery pots inside a planter box also works well.
The same bark mulch that lines your outdoor shrubs is a suitable option for filling planter bottoms. Mulch is natural and won’t interfere with the regular drainage of your soil.
“Skip the gravel inside the bottom of individual or pot liners – It is a myth that a layer of gravel (inside the bottom of an individual pot) beneath the soil improves container drainage. Instead of extra water draining immediately into the gravel, the water “perches” or gathers in the soil just above the gravel.
Is Flex Seal safe for planters?
A: Yes, Flex Seal Liquid is safe around plants and animals (once fully cured).
How do you fill an outdoor planter?
Lightweight Filler for Pots
- Recycle Plastics. Plastic Water/Soda Bottles. …
- Reuse Packing Materials. …
- Unused Plastic Pots Turned Upside Down.
- Recycled Crushed Cans.
- Natural Materials. …
- Recycled Cardboard, Newspaper (Also for short term use only.)
What should I line a wooden planter with?
To protect the wood, line the planter inside with plastic, such as old plastic compost bags, fixing it with small nails. Make drainage holes before filling it with compost.