Geranium is a generic term that may be used to a wide variety of plants, ranging from the tough cranesbills (Geranium spp.) to the more delicate garden hybrid geraniums (Pelargonium x hortorum). Geranium plants may produce flowers in a wide variety of colours, including white, pink, red, purple, and even orange and salmon. Although the majority of geraniums are not picky about the soil in which they are grown, it is essential to provide enough space between plants in order to ensure enough air circulation.
It is necessary to plant different varieties of geraniums at different distances apart in order to provide sufficient air circulation for the plants.
Hardy Geraniums: Cranesbills
According to research conducted by the University of Illinois Extension, plant hardiness zones 5 through 8 are suitable for growing hardy geraniums, which produce flowers in a rainbow of hues. Cranesbills often form mounds that are anywhere from 12 to 18 inches tall and as much as 3 feet broad, which makes them an excellent addition to a rock garden or wildflower border. If you prune the plants in the autumn, they may produce flowers again the following spring in zones that are warmer.
To provide adequate air circulation, give cranesbills a space that is at least 6 inches wider than their mature width from the centre of the plant to the adult outline of each adjoining plant. This space should range from 18 inches to 3 1/2 feet. In the event that the plants grow too big, the crowns that form around the parent plant may be divided and the offspring replanted at the same distance apart.
Zonal Geraniums: Pelargoniums
According to the Missouri Botanical Garden, common garden hybrids, often known as zonal geraniums, are sensitive perennials that are only hardy in USDA zones 10 through 11. Pelargonium x hortorum are the scientific name for these plants. They are planted as annuals in zones 9 and below, or they are dug out and brought inside to spend the winter as a houseplant next to a light window, or they are allowed to go into dormancy in a cold, dark location.
The flowers of zonal hybrids, which are upright plants, form balls of florets that rise above the plant and may reach heights of up to three feet tall and broad. If you position your plants 12 inches apart, you should have enough area for all of your smaller plants, but your bushier relatives need up to 24 inches of space between each plant.
According to the Missouri Botanical Garden, ivy-leaved geraniums, also known as Pelargonium peltatum, are hardy in USDA zones 10 through 11, and trail along like their namesake while flowering as they develop. They can’t stand the heat, so they need to find some shade throughout the day.
Because of their lengthy branches, ivy geraniums that are planted in the ground need a space that is at least 24 inches all the way around. If, on the other hand, you are cultivating geraniums in pots, you may place them closer together since their branches will drape over the edge of the container. Two plants should be placed in a pot that is 8 inches in diameter for a bountiful display of multicoloured blooms.
A Few Considerations
It is common practise for plant tags to recommend the appropriate spacing for garden plants; nonetheless, it may be tempting to arrange them closer together in the spring when there is a scarcity of colour. However, if you are prepared to provide geraniums with the soil type that they want, which is rich loam that has good drainage, as well as at least six hours of sunlight each day and one inch of water per week, it won’t be long before they reach their full height. At that time, you will need to either transplant some of them or trim them back and utilise the tips for new plants. Either way, you will have to do one of these things. However, you should never plant cranesbills too close together. If you don’t separate these perennials from one another, they’ll end up growing in a tangled mess that impedes circulation and fosters the growth of many fungal diseases.
At that point, you’ll have to either transplant some of them or cut them back and use the tips for new plants. Never plant cranesbills too close, though. Otherwise, these perennials will grow together in a jumble that limits circulation and encourages several fungal diseases.