Woolly cranesbill Geranium erianthum

Water

Woolly Geranium, commonly known as Geranium erianthum, prefers consistently moist soil but is not tolerant of waterlogging. It should be watered thoroughly once the top inch of soil feels dry to the touch, typically once a week, depending on ambient temperature and humidity. Each watering should provide enough water to soak the soil around the roots. In terms of volume, it's recommended to use about a half-gallon of water for a medium-sized pot each watering session, making adjustments for larger or smaller pots accordingly.

Light

Woolly Geranium thrives in bright, indirect sunlight. The ideal spot for this plant is in a location where it receives filtered sunlight for most of the day, avoiding direct midday sun which could scorch the foliage. An east or west-facing window that provides gentle morning or evening sunlight is optimal for the health and growth of Woolly Geranium.

Temperature

Woolly Geranium grows well in temperatures ranging from 60°F to 70°F, which are ideal for its flourishing. It can survive minimum temperatures down to about 50°F but should be protected from frost. The plant should not be exposed to temperatures above 80°F for extended periods as high heat can stress the plant and impede its growth.

Pruning

Pruning Woolly Geranium is crucial for maintaining a compact, bushy shape and encouraging new growth. Prune in early spring, removing dead or leggy stems and any spent flower heads to promote blooming. It's typically sufficient to prune once a year, but additional light pruning can be done if the plant becomes untidy during the growing season. Always use clean, sharp shears to make clean cuts.

Cleaning

As needed

Soil

Woolly Geranium thrives in organically rich, well-draining soil with a pH range of 5.5 to 7. A mix of two parts peat moss, one part loam, and one part perlite or sand can create an ideal environment. Regularly check the pH and adjust by adding lime for increased alkalinity or sulfur for increased acidity as needed.

Repotting

Woolly Geranium should generally be repotted once every 2 to 3 years or when it outgrows its current container. It's best to repot in the spring before the new growing season begins.

Humidity & Misting

Woolly Geranium prefers moderate humidity levels, mimicking its natural woodland habitat. Aim for humidity levels around 40-50% for optimal growth and health of the plant.

Suitable locations

• Indoor

  Place in bright, indirect light with moderate humidity.

• Outdoor

  Full to partial sun, shelter from strong winds, and well-draining soil.

• Hardiness zone

  2-7 USDA

Life cycle

The life of the woolly geranium (Geranium erianthum) begins with seed germination, which requires a warm, moist environment to initiate. After germination, the seedling stage follows, where the young plant develops its root system and first true leaves. The vegetative stage is marked by significant growth as the woolly geranium develops a larger stem, more complex root system, and numerous leaves, preparing for reproduction. During the flowering stage, the plant produces distinctive pink to purple flowers, which are critical for pollination and subsequent seed production. Pollination is often facilitated by insects, leading to the formation of seeds within the fruit, typically a capsule that releases seeds when mature. The plant then enters a period of dormancy, particularly in colder climates, where it may die back to the rootstock before resuming growth in the next season.

Propogation

• Propogation time

  Spring to Summer

• Geranium erianthum, commonly known as the Woolly Geranium, can be propagated through seed sowing. To propagate the Woolly Geranium effectively via seeds, it's best to sow them directly outdoors just after the last frost of the season. Indoor sowing can begin 8-10 weeks before the last frost, using a seed starting mix. Plant the seeds shallowly, as they need light to germinate, and maintain a temperature of around 70°F (21°C). Seedlings will emerge in 14-21 days, and once they have grown large enough to handle and there is no more risk of frost, they can be transplanted outdoors into well-draining soil with good sunlight exposure.