Van Dycks

Iris divisions

Plant rhizomes horizontally with the tops of the rhizomes above the soil level. Press soil firmly around the roots to remove the air pockets.

Dicentra, Paeonia, Platycodon Roots

Plant about 2" deep so that the tips of the new eyes are just below ground level.

Chrysanthemum, Dianthus, Phlox, Campanula, etc.

Plant so that the crowns of plants with fibrous root systems are just above the surface of the soil.

Althaea, Gypsophila, Hibiscus, etc.

Plant perennials with long tap roots so that the crowns are just below soil level.

Some plants require staking to support the weight of their flower heads without drooping, or to keep tall flowering spikes from being broken by wind or rain. It is easier to place the stake or support hoop when planting, avoiding possible injury to a larger plant.

Once the plants start growing, water when necessary. Fertilize sparingly. Keep a close eye out for insect infestation or disease and treat immediately. Deadhead or cut back the flowers after they fade. This often encourages a second flush of bloom and keeps the plant looking neat. After the first frost, cut back all the dead stalks and foliage to about 4". In cold winter areas, perennials benefit from mulching. Once the weather is consistently cold, mulch with straw, salt hay or leaves to prevent winter injury caused by alternate freezing and thawing of the ground. If the fall has been dry, water the garden well before mulching.

Most perennials need to be divided every few years to generate new growth and to keep them from becoming overgrown and crowded. Dividing is usually done in spring, unless otherwise noted. Replant one division where the original plant was, and use the other divisions in other parts of the garden. Friends will often be glad to help with this garden chore, especially if they are repaid with divisions to take back to their own gardens.

Planting Depth: If planting depth is not indicated, the perennial root should be planted just beneath the soil surface. Dig an adequate hole for your perennial root, spread the roots, and allow 11⁄2-2" of soil about the crown.