What is the proper way to plant a container-grown tree? 

Dig a hole that is approximately two to three times the diameter of the container. The depth of the hole should be 2 or 3 inches less than the height of the soil ball. Slope the sides of the planting hole so the top is several inches wider than the bottom. 

In poorly drained soils, the depth of the hole should be approximately two-thirds the height of the soil ball. 

Once the hole has been prepared, carefully lay the tree on its side. Tap the sides of the container to loosen the soil ball from the container, then slide the container off of the soil ball.  If the sides of the soil ball are a mass of roots, make several 1/2-inch-deep cuts up the sides of the soil ball with a sharp knife.  Also, make a 1/2-inch-deep, x-shaped cut on the bottom of the soil ball.  Carefully place the tree in the hole.  The top of the soil ball should be approximately 2 or 3 inches above the surrounding soil.  In poorly drained sites, the top one-third of the soil ball should stick above the surrounding soil. 

It’s often necessary to cut off the containers of large, container-grown trees.  Also, cut away the containers of poorly established trees to prevent the soil ball from falling apart. Begin by cutting off the bottom of the container. Place the tree in the hole, then cut away the sides of the container. All containers should be removed, even purportedly plantable containers. 

After placing the tree in the hole, make sure the trunk is straight. Then, begin backfilling with the original soil. Do not add compost, peat, or other organic materials to the soil. Gently firm the backfill soil in the hole with your hands.  Once planted, water thoroughly. 

Why is my rhubarb flowering? 

Flowering is a natural plant process. Drought, infertile soils and extreme heat may encourage flowering.  Age may be another factor. Older plants tend to flower more than younger plants. 

Regardless of the reason, the flower stalks should be promptly pulled and discarded. The rhubarb plants will be less productive if allowed to flower and set seeds. 

Are ants necessary for peonies to flower? 

Ants aren’t necessary for peonies to flower. The ants are attracted to the sugary nectar produced by the peony buds. The nectar is a good source of food for the ants. Peony buds will open without the presence of ants. 

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