Geranium

About Geraniums

Geraniums are sun-loving, tender perennials grown for their bright clusters of flowers and their tidy, often scented foliage. In garden settings and containers, they bring long-lasting color in shades such as red, pink, white, salmon, and bicolors, which is why they remain such common choices for window boxes, balcony planters, and summer borders.

Different Pelargonium types vary in habit, but they share the same broad appeal. Some grow as compact, upright plants with rounded leaves and flower heads held above the foliage, while others trail more freely from containers. In all forms, the combination of clean foliage and steady flowering gives them a neat, reliable presence through the warm season.

The leaves also help define the plant. They may be fleshy, glossy, zoned, or faintly scented, and the stems hold some moisture, which explains why these plants handle short dry periods better than constantly wet soil. With the right balance of sun, drainage, and simple maintenance, Geraniums can keep flowering for a long stretch.

How to Care for Geraniums

Watering

Water thoroughly when the top inch (2–3 cm) of soil feels dry, then let all excess drain away completely. Geraniums dislike constantly wet roots, and soggy soil can lead to yellowing leaves, edema, and root rot.

At the same time, letting the root ball stay baked dry for too long can lead to leaf scorch and bud drop. In hot sunny weather, containers may need water much more often, while in cooler or duller weather the interval should be extended. Checking the soil matters more than watering on habit.

Sunlight

Aim for full sun to very bright light for the best flowering. Strong direct light is one of the main reasons Geraniums stay compact and continue producing buds well.

In very hot climates, some light afternoon shade can help reduce scorch and faded petals, but deep shade usually causes much weaker flowering and leggier growth. Indoors, the brightest possible south- or west-facing window is the best fit.

Temperature

Keep Geraniums in a moderate to warm range, ideally around 64–77°F (18–25°C) during active growth and flowering.

They are not frost-hardy, so temperatures near freezing can damage or kill them. In cooler climates, they are often used outdoors as summer plants or moved inside before cold weather arrives. Cool nights above frost can help maintain compact growth and stronger flower color.

Humidity

Low to moderate humidity with good air circulation suits Geraniums best.

Very humid, stagnant conditions can encourage gray mold and leaf problems, especially if flowers and foliage stay wet for too long. Proper spacing and watering at soil level help reduce these issues.

Soil

Use a well-draining but reasonably fertile mix. Geraniums grow best where water can move through easily without leaving the roots in a heavy, airless mass.

In containers, a quality potting mix improved for better drainage is suitable. In the ground, loosened and amended soil is a better fit than heavy clay that holds water around the roots for too long.

Feeding & Deadheading

Feed lightly but regularly during the growing season with a balanced or bloom-leaning fertilizer every 2–4 weeks. Too much nitrogen can push leafy growth at the expense of flowers, so a moderate approach gives better overall results.

Remove spent flower heads by cutting the full flower stalk back to a leaf junction. This keeps Geraniums tidier and supports more continuous rebloom.

Pruning & Overwintering

Trim back leggy stems to encourage branching and a fuller shape, especially on older plants. This helps keep the plant denser and more floriferous over time.

In regions with cold winters, favorite varieties can be kept by taking cuttings in late summer or by moving potted plants indoors to a bright, cool room. Water only enough to keep the soil from becoming completely dry, then in spring prune back, refresh the soil if needed, and reintroduce the plants gradually to outdoor conditions.