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Known as Hardy Geraniums these tough perennials are great as low care, moderate water edging plants. They bloom
heavily in the spring and early summer. Trim back flowers and some of the foliage after the bloom cycle to encourage
new growth and flowers. In late winter prune back close to the base of the plant to allow spring growth. Fertilise twice per
year with slow release fertiliser or organic fertiliser in February and July.
Divide every 3-5 years as the plants get thin, don't bloom as much and get dead sections. Most often when people hear
the name Geranium they think of Grandma's plants with bright colored flowers often seen in hanging baskets and tubs
Actually those plants are Pelargoniums .
The real, honest to god Geraniums are low growing border perennials with lovely pastel flowers, finely divided leaves and
Hardy geraniums have the common name- Cranesbill. The seed pods have the look of a birds beak. The native species
of geranium can be weedy. Hybrids, large flowered forms are hardy to heat and cold. They can tolerate sun and light
Good drainage is a plus but not a must.
Geraniums are generally very adaptable and forgiving plants, which will tolerate most soils (unless really waterlogged)
and, as a rule, cope with either sun or shade. The exceptions are the smaller species that do need sun and free-draining
soil. During the growing season, feed with a balanced fertiliser such as growmore every month and water during
prolonged dry spells. In the winter they will prefer to be kept quite dry.
Pruning off the dead flower heads will encourage further flowers later in the season. The foliage of some varieties, can
look tatty by midsummer, but they can be cut back hard with shears to encourage a further flush of fresh foliage. Give
trimmed plants a thorough soaking and a boost with a high-potash fertiliser, such as tomato feed. Geraniums are fairly
trouble free although they can be attacked by vine weevil larvae, slugs and snails. Also, in dry conditions, they may suffer
from powdery mildew. A good layer of mulch applied in spring will help to combat this. The mulch helps maintain the soil
moisture level, which will prevent the water stress that encourages the fungus.
Geranium Johnson's Blue