The Speedwell should be grown in a bright place, with direct sunlight. These plants lose the aerial part during the coldest months of the year. As spring begins, stems and leaves quickly start to reproduce.The Speedwell should be grown outdoors; it can bear very harsh temperatures without any problems, even many degrees below zero.
These plants give origin to a brush with a rounded form. The Speedwell is large in size and 60 cm in height; in the summer it assumes a blue colouring. These plants aren't evergreens, which means they lose their leaves some months during the year. The Speedwell is a plant for a rock garden.
We suggest adding to the irrigation water, in the spring, every 20-25 days, a specific fertilizer for flowering plants. We can also mix to the soil near the plants a granular slow release fertilizer, which has a 3-4 month action.
Water rarely, about once every 1-2 weeks with 2-3 glasses of water , keeping the soil dry for a few days before watering again; when wetting we suggest avoiding surpluses, however to wet the soil deep down. Perennial plants are subject to some months of vegetational rest. During these months it isn't necessary to water them.
Generally during this time of year we suggest a pre-emptive treatment with wide range insecticide and with a systemic fungicide, to prevent the attack from part of the aphids and the development of fungus diseases, often favoured by a mild and damp climate.
We suggest a substratum characterized by an excellent drainage.
When wanted we can grow these plants in a vase. The indications given in this article are related to a medium size plant.