You need good potting mix and you need to add soil moist to help retain water. put a layer of weed guard down on the bottom
Add the first row of flowers, then cover with soil. You can use packing peanuts as filler put them in the far back where the flowers would not be planted.
Then cover with more dirt.
Add the third row of flowers, fill with dirt and plant flowers on top.
April 13 – first planted
May 20 – starting to grow
September 29 – Amazing!
More Details: Pallet Planter Box For Cascading Flowers
