The number of succulent cuttings that you use will depend on the size of the floral foam cone that you use. I used a 12" cone, but covered the bottom with a small tree collar, so I basically only covered the surface area of a 9" cone. Soak the foam in water before beginning the project. Fill a bucket or sink with water then set the foam into the water. Don't push it down or rush it. It will sink fairly quickly as it absorbs water. You can also make this tree without soaking the foam.
Succulent cuttings are not the same thing as succulent plants. Sometimes you can separate one plant into more than one cutting. I ordered a bunch of small succulents online and was able to divide some of them into two sections.You'll need 30+ stems/cuttings. Clean any dirt off, and preserve a much of the stem as you can. You can always trim it shorter if you need to once you begin assmebling the tree.
Use a small dowel or paintbrush to gently poke a hole into the floral form before adding each stem.Make sure that the hole you poke is slightly smaller than what you need to ensure a snug fit as you slide the cutting into it. If the hole is too big, the succulent may fall out of the cone.
Inserting a toothpick in stems that are shorter is helpful for getting them to stay.
Once you've filled your tree with succulent cuttings, fill in any of the gaps with moss. Tuck more moss in between the succulents and the foam, in any areas large enough to do so, to give the succulents something to lean on. The moss acts as a barrier between the moist foam and the succulent “leaves” which will prevent them from molding.
Place your tree on some sort of base (platter, planter, plant saucer, etc.) to protect your furniture.Remember: your floral foam is full of water! It will leave water on whatever surface it is touching. I placed my tree on a platter and added moss around the base.
The moisture from the tree will keep your succulents hydrated for throughout the holiday season. However, if you notice things drying out you can spritz the tree with water. Keep tree in a sunny area, rotating every few days so that all of the cuttings get exposure to the sun.
After the holiday season is over, remove the succulent cuttings and add them other projects or place in well-draining soil designed for succulents.