Lido Mix
Lobelia
Lobelia, Flower cardinal, Edging lobelia
Scientific classification
Class
Dicotyledons
Division
Angiospermae
Family
Campanulaceae
Order
Asterales
Genus
Lobelia
Species
erinus
Key information
Description
An ornamental herbaceous plant with a globular and compact habit, ideal for creating dense cushion-like covers with luxuriant flowering that lasts for about three seasons, from spring to early-mid autumn, with a profusion of brightly coloured flowers that make the plant a focal point in mixed compositions with other ornamentals. It is very versatile and popular both for adorning flower beds and for embellishing terraces or balconies in pots, tubs and planters. Prefers cool summer temperatures and well-draining soil with preferably half-shaded exposures.
Species video
https://youtu.be/RI-D3YgbHAk
Variety description
A very early variety, it flowers about 15 days earlier than standard varieties. It is available for sale very early and can colour the balconies in early spring, not fearing cold returns. At altitudes above 500 m. It gives its best in full sun, while in the lowlands it fears the strongest heat and therefore needs to be placed in half-shade or shade (but bright). In compositions with other plants it gives an incomparable blue point and can be grown both in tubs and in flowerbeds together with other not very vigorous annual flowering plants such as marigold, alyssum, impatiens walleriana and red splendens sage.
Origin and history
Curiosities and special features
The generic term, Lobelia, was given by the Swedish botanist Carl Linneaus in the 18th century in honour of Matthias de L'Obel, botanist and physician to King James I of England in the 1500s, who is also remembered for having described the difference between monocotyledons and dicotyledons.
Origin and distribution
Native to the Cape Province of South Africa, where it grows wild as a perennial, it was introduced to Holland in 1690, to England in 1759 and to the United States in 1867 before spreading throughout Europe during the 19th century, where it was mainly appreciated as an ornamental annual flowerbed or border plant and later in the 20th century also as a herbaceous species for flowerpots and tubs.
Main features
Flower size
Variety with a small flower that lends elegance and sinuosity to the scenic flowering.
Leaf
Leaf shows a lanceolate, linear lamina.
Flowering period
It lasts from mid-spring to early autumn for a duration of 120 to 150 days, this ample time interval allows us to enjoy its blooms for almost three seasons, adding a touch of colour to gardens and terraces for a long time.
Inflorescence
Inflorescence raceme or cluster.
Leaf colour
Solid-coloured Leaf, colour-balanced with the colour of the Flower.
Plant height
The height of the plant varies from 0.1 to 0.18 m, making it suitable as a first or second-stage plant for mixed flower bed compositions.
Lifespan
Cultivated as an annual ornamental plant.
Where to plant
It is a very attractive, decorative and versatile solution, suitable for different contexts such as flowerbeds , balconies, outdoor tubs, borders In such spaces, its flowering prevails significantly and, at the same time, creates a hospitable environment for butterflies and other pollinating insects, helping to recreate a situation of biodiversity that is increasingly in demand and welcome in our outdoor areas.
Stem
The stem is herbaceous and the variety has no thorns.
Flower
The flower is simple in form, small in size, with an irregular corolla and single-coloured petals. It is arranged in small to medium-sized raceme or cluster inflorescences. It flowers from mid-spring to early autumn, with a flowering period of between 120 and 150 days. It is attractive to bees and bumblebees.
Growth
It shows compact growth, ideal for use in homogeneous groups or in composition with other ornamentals to create a very decorative flower cushion in a flower bed or border.
Plant habit
Variety with a globular and dense habit.
Branching
The branching tendency is medium, with a balanced relationship between foliage and flowers that creates a decorative and elegant end result.
Growing conditions
PH
The ideal soil pH for lobelia is acidic or sub-acidic, between 5.2 and 5.8.
Soil preparation
Before spring transplanting into the garden, the soil must be prepared to accommodate the new plants and ensure their proper development. To this end, carry out light digging, removing any weeds and bulky stones, proceed by burying chemical or organic slow-release fertiliser and breaking up the coarsest clods. To improve the drainage of excess water, create a raised flower bed by slight ballasting, then add professional quality substrate on the surface to an average height of 5/10 cm and carefully level.
Read more on the Joyflo blogSun exposure
It expresses best growth and flowering results when exposed in half shade, light shade, full sun but above 300 m above sea level; it is recommended to avoid direct sunlight during the hottest hours of the day.
Ideal climate and temperature
The ideal temperature is between 12 and 20 °C; it prefers cool summer climates.
Use
Appreciated for its prolonged flowering with brilliant colour tones in:
Outdoor ornamental Landscaping
Hardiness
A variety of medium hardiness, following a few indications regarding exposure and irrigation will result in optimal growth and flowering.
Soil
For gardens and flowerbeds, it offers the best growth results in a light, medium soil; for use in pots or planters, a substrate for spring plants based on peat and perlite is recommended.
Difficulty
It is fairly easy in cultivation and maintenance, and the level of management effort required is low.
Growing tips
In order to ensure a suitable development of the root system and, consequently, of the aerial apparatus with a subsequent abundant spring-summer flowering, here are some useful cultivation guidelines
Avoid direct sunlight in the hottest hours Keep the substrate dry at low temperatures Require abundant but no stagnant watering
Combinations with other plants
Highly recommended in compositions with other ornamental species such as Alyssum, Impatiens walleriana, Lobularia x hybrida, Lobularia maritima, Salvia splendens,Tagetes erecta, Tagetes patula.
Care and plant health
Planting
For use in flowerbeds, an average density of 32 plants per square metre is recommended in order to ensure proper development of each specimen, thus obtaining well-proportioned and formally balanced compositions. It is also advisable to position the plant on a raised bed with the collar off the surface, avoiding excessive compression and sinking of the lump and watering immediately after planting, preferably during the morning hours.
Propagation
It can be multiplied by seed, taking care to keep the soil moist but free of waterlogging to promote sprouting.
Repotting
Use an ornamental plant fertiliser with programmed release to be distributed according to the dosage and frequency not excessive, as indicated by the label.
Watering
Use rainwater, or alternatively aqueduct water, either manually or by irrigation. When transplanting, assist the seedling as it is more susceptible to stress in the new site, keeping it at a constant humidity but avoiding excessive watering which can cause root rot and dieback. Afterwards allow the soil or substrate to dry slightly between watering and the next, always checking the moisture level before intervening, preventing both damaging water stagnation and dryness.
Read more on the Joyflo blogFertilising
During pre-transplant soil preparation, carry out basic fertilisation by burying organic or slow-release chemical fertiliser.
Fertilisers suitable for ornamental flowering plants are generally suitable to ensure suitable development and abundant flowering throughout the spring-summer season; after proper establishment in the new planting site, apply fertiliser to the soil or substrate by distributing it in liquid form, i.e. diluted in the irrigation water, without exceeding the doses and frequencies.
Read more on the Joyflo blogEdibility and toxicity
Pet safety
Potentially toxic if ingested in certain quantities.
Edibility for humans
Non-edible.
Toxicity for humans
Toxic.
Expert advice
Tip
Lobelia is better adapted to cold than to heat, so in summer use it in full sun from 400 metres upwards. In cooler periods, the blue colour of the flowers intensifies, becoming very bright, but be careful to moderate or not to over-water because root asphyxia is more likely to occur. Never allow the soil to dry out too much to avoid basal dryness.
Profile curated by Maurizio Arbusti.




