Tuberous geraniums, also known as hardy geraniums, wild geraniums, or cranesbill, are their slightly wild cousins. … As the name implies, tuberous geranium plants spread via underground tubers. In spring, clumps of rosy lavender blooms marked with dark purple veins rise on wiry stems above lacy-looking foliage.

Are geraniums bulbs or seeds?

Geraniums are slow from seed, so start them early – in mid- to late January. Your plants will begin blooming about 12 to 16 weeks after sowing. The seeds have a tough outer coats, so to increase germination rates, it helps to moisten them before sowing.

When should I plant geranium bulbs?

The ideal time to plant Geraniums is in the spring after the danger of frost has passed. Expect top growth and additional roots to form within a few weeks of planting, depending on the soil and air temperatures. Flowers will emerge from late spring into summer.