Perennials can be planted anytime from spring through fall.
Prepare the garden by breaking up the existing soil (use a hoe, spade, or power tiller) to a depth of 12-16” (30-40cm). Add organic matter such as manure, peat moss or garden compost until the soil is loose and easy to work. Organic ingredients improve drainage, add nutrients, and encourage earthworms and other organisms that help keep soil healthy. Give plants an extra boost by adding a granulated starter fertilizer or all-purpose feed that encourages blooming (for example fertilizers labeled 5-10-5).
Check the plant label for suggested spacing and the mature height of the plant. Position plants so that taller plants are in the center or background of the landscape design and shorter plants in the foreground. To remove the plant from the container, gently brace the base of the plant, tip it sideways and tap the outside of the pot to loosen. Rotate the container and continue to tap, loosening the soil until the plant pulls smoothly from the pot.
Dig the hole up to two times larger than the root ball and deep enough that the plant will be at the same level in the ground as the soil level in the container. Grasping the plant at the top of the root ball, use your finger to lightly rake the roots apart. This is especially important if the roots are dense and have filled up the container. Set the plant in the hole.
Push the soil gently around the roots filling in empty space around the root ball. Firm the soil down around the plant by hand, tamping with the flat side of a small trowel, or even by pressing down on the soil by foot. The soil covering the planting hole should be even with the surrounding soil, or up to one inch higher than the top of the root ball. New plantings should be watered daily for a couple of weeks to get them well established.
Plan ahead, for plants that get tall and require staking or support cages. It’s best to install cages early in the spring, or at planting time, before the foliage gets bushy. Vining plants require vertical space to grow, so provide a trellis, fence, wall or other structure that allows the plant to grow freely and spread.
Finish up with a 2” (5cm) layer of mulch such as shredded bark or compost to make the garden look tidy, reduce weeds, and retain soil moisture.
I transplanted two potentilla fruticosa from pots last September in same area, same soil and same light conditions. One did very well, the other survived the winter but was dead by July. The survivor is showing beautiful multi-color flowers right now and it has many seedlings under and around it. The seedlings are up to six inches in length. I’m wondering if I could transplant a couple of those seedlings to the area where I had planted the one that did not survive. If so, when and how should I transplant it?
I live in Deary, ID.
Thank you!
Hi Dave,
It’s certainly worth trying to transplant your potentilla seedlings since it sounds like you have plenty of them to experiment with. The key to transplanting seedlings is to try to keep the root mass intact as much as possible. This is usually accomplished by cutting the soil around the seedling with your trowel and then undercutting and lifting the seedling. At the current size of your seedlings, this should be a quick process. You might want to have the planting holes ready to go so you can move the seedling directly to its new location. (You’ll probably want to have some garden soil on hand to refill the holes you’re making digging up seedlings.)
Maintain the same soil level as before. You don’t want to bury the main stems. Gently tamp the soil around the plant with your foot to ensure the soil thoroughly fills in around the roots. Next you’ll want to water in your seedlings. It would be best to keep them on the moist side for a few weeks as they settle in. Because you are quickly entering colder weather in your region, it wouldn’t hurt to apply a couple inches of compost or bark mulch around the root zones for protection.
Transplanting can be done in fall or spring. Fall planting usually allows for better root development since energy isn’t being expended on growing foliage and overall water stress is usually less than during warm weather. Maybe you could preserve some seedlings for spring until you see what happens with your fall transplants. If the fall transplants are successful (you’ll know when they leaf out in the spring), then you can weed out any unwanted extra seedlings.