Commonly known as the Canary Island foxglove, Isoplexis canariensis is a gorgeous, evergreen shrub native to both the Canary islands and the island of Madeira. Upright in habit, it will usually grow to 4 -5 feet tall, although some individual specimens can reach up to 6 ft tall given the right conditions.
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Although capable of surviving temperature down to as low as -4 degrees Celsius, it will not thank you for it and so it is best to avoid freezing temperatures wherever possible. To keep your plant in optimum condition, keep winter temperatures above 6 degrees Celsius which for many of us in the cooler climates of northern Europe will mean growing your Isoplexis canariensis in a pot so that it can be brought in under protection in freezing weather.
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Keep the roots moist over the growing period but avoid having them waterlogged. A 10 liter pot will be fine, but if you are happier with moving heavier specimens then consider using up to 25 litre pots. Feed with a liquid soluble-fertilizer once a month and keep the compost just on the moist-side over the winter.
Isoplexis specimens that are going to be planted in the ground will prefer a light, moist, well-drained conditions. Dig in plenty of humus-rich compost such as leaf-mold or peat but avoid nutrient-rich matter such as well-rotted farm manures or garden composts.
For related articles click onto the following links:
HOW TO GROW FOXGLOVES FROM SEED
HOW TO GROW LOTUS BERTHELOTII
THE CANARY ISLAND TREE DANDELION