It’s impossible to give a blanket price for geraniums in the UK, as it depends on the variety and quality. For example, if you purchase a fully grown plant, it will continue to grow and will flower abundantly in a very short time, but if you purchase a smaller plant or a “plug plant”, you will need to give extra care at first, until they become more established.
The smaller the plant, the more care is needed at home until geraniums flower.
Standing and hanging geraniums
In nurseries and garden centres you can expect to pay around £2 to £3 for a good standard plant, which usually comes in a pot with a diameter of 10.5 centimetres. At the start of the season, they are sometimes on sale for a little less.
Vigorous varieties in 12 cm pots cost a little more.
Solitary geraniums in 13 cm pots or larger will also cost more.
You can sometimes buy small geraniums – known as plug plants – in multipacks online or at discount stores for a lower cost.
For lush balcony boxes, geraniums in 12 cm pots are the best choice, but the standard variety can also work very well, taking a little longer for the gaps in the planting space to grow over.
In containers, premium-quality geraniums in a 13 cm pot or larger will look pretty. However, you do not need to buy large geraniums like this for balcony boxes, because boxes would need to be very voluminous for the root balls to properly set in well.
The reasons for price differences are:
The cultivation of large geraniums consumes more resources than that of small ones. Large geraniums need more space in the greenhouse. They also grow there for longer than the small ones. The big ones also need bigger pots, more soil, more water, more fertiliser, and more work.
Regal Pelargoniums are usually found at the same price level as other flowering houseplants.