Mad About Berries

How To Grow Garden Geranium (Pelargonium x hortorum)

The Garden Geranium or Zonal Geranium, scientifically known as Pelargonium x hortorum, is a perennial favorite amongst gardeners worldwide. This diverse species, originating from South Africa, is renowned for its vibrant color spectrum, including shades of pink, red, white, and even bi-colored varieties.

With their distinctive leaves, ranging from round to ivy-shaped, and stunning blooms, these plants are an excellent choice for flower beds, containers, and hanging baskets.

The true appeal of Garden Geranium, however, lies in its hardy nature and its adaptability to different growing conditions, making it an excellent option for both novice and expert gardeners.

Published: May 18, 2023.

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The distinguishing features of Garden Geranium extend beyond its vivid hues. Often, they are accompanied by a pleasant fragrance that makes them a desirable option for sensory gardens.

Their ability to withstand the challenges of different seasons, along with their resilience against most plant diseases, enhances their versatility.

Furthermore, these plants are not just aesthetically appealing but also serve as effective natural deterrents against certain insects, providing a dual role in the garden as both ornamental and practical additions.

Garden Geranium Growing Conditions

Like most plants, Garden Geraniums thrive best when provided with optimal conditions. For soil, these plants prefer well-drained, fertile, and slightly acidic to neutral pH levels. Although they can tolerate a wide range of soil types, avoiding excessively waterlogged or clayey soil helps prevent root rot.

Regarding sunlight, Garden Geraniums adore bright light and do exceptionally well in full sun to partial shade. They are sun-loving plants, and ample sunlight not only promotes healthier growth but also triggers more prolific blooming. However, during the hottest parts of the day, a bit of shade can be beneficial, especially in scorching climates.

In terms of water requirements, these plants do not like to sit in overly moist conditions. Watering should be done thoroughly, allowing the soil to dry out slightly between sessions. Overwatering is a common mistake and can lead to root diseases. As a rule of thumb, it's better to slightly under-water than over-water Garden Geraniums.

Temperature-wise, Garden Geraniums are comfortable in a typical outdoor summer environment, with temperatures between 60-75°F (15-24°C). While they can withstand lower temperatures, prolonged exposure to frost may be detrimental to the plant's health.

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When And How To Transplant Garden Geranium

Transplanting is an important aspect of gardening, allowing your plants to have more space for growth, resulting in healthier, more robust specimens.

The ideal time for transplanting Garden Geraniums is in the spring, when the threat of frost has passed. Start by selecting a location that meets the plant's requirements for sunlight and soil.

Carefully remove the geranium from its original container or location, taking care not to damage the root system. Dig a hole in the new location that's twice the size of the root ball.

Place the geranium in the hole, ensuring the top of the root ball is level with the surrounding soil. Fill in the hole, firming the soil around the plant gently.

Water the newly transplanted geranium thoroughly and continue to monitor the plant to ensure it's adapting well to the new location.

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Growing Garden Geranium From The Seeds

Growing Garden Geraniums from seeds can be a rewarding process. Begin by sowing seeds indoors 8 to 10 weeks before the last frost date. Plant the seeds in a seed-starting mix, pressing them lightly into the surface but not covering them, as geranium seeds need light to germinate.

Maintain a consistent temperature of around 70-75°F (21-24°C) to ensure optimal germination. Water the seeds sparingly but consistently, ensuring that the soil remains moist but not soggy. Once the seedlings emerge, usually within 7 to 14 days, ensure they receive ample light, ideally placing them by a south-facing window or under grow lights.

As the seedlings grow and develop their first true leaves, they can be transplanted into individual pots. Continue to provide plenty of light and water as needed. Once all risk of frost has passed, and the seedlings have developed a robust root system, they can be moved to their final location outdoors.

How To Grow Garden Geranium In Pots And Containers

Growing Garden Geraniums in pots and containers provides the advantage of mobility, allowing you to move the plants to optimal sun exposure or to protect them in adverse weather conditions.

Start by selecting a container that is at least 8-12 inches in diameter and has adequate drainage holes.

Note: Garden Geranium can easily grow even in much smaller pots, but in that case, it must be more often watered and fertilized using slow-release fertilizers.

Fill the container with a well-draining potting mix, leaving some space at the top. Plant the geraniums at the same depth as they were in their nursery pots, then backfill with the potting mix, firming it gently around the base of the plant.

Container-grown geraniums require regular watering, as pots dry out faster than garden soil. Water thoroughly, then let the top inch of the soil dry out before watering again.

To promote blooming and vigorous growth, apply a balanced, water-soluble fertilizer every two weeks during the growing season.

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Is Garden Geranium Poisonous?

Garden Geraniums are generally safe and are not considered poisonous to humans. However, they do contain certain compounds that can cause reactions in sensitive individuals, such as skin irritation upon contact or stomach upset if consumed in large quantities.

As for pets, the American Society for the Prevention of Cruelty to Animals (ASPCA) lists Geraniums as toxic to dogs and cats. Ingestion can result in mild to moderate symptoms like vomiting, reduced appetite, depression, or dermatitis.

Therefore, it is recommended to keep Garden Geraniums out of reach from pets.

Few Final Words

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Growing Garden Geraniums can be a fulfilling gardening journey, rich in color and sensory delights. From optimal growing conditions to knowing how to transplant and propagate these plants, mastering the art of geranium care will result in a beautiful, vibrant addition to your garden or home.

Whether grown in flower beds, containers, or hanging baskets, these resilient and radiant plants can offer beauty and joy to your surroundings.

Despite certain safety precautions needed for sensitive individuals and pets, their overall hardiness and aesthetic appeal make Garden Geraniums a worthy addition to any garden.

For more information about Garden Geranium, feel free to check the following:

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