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Lobelia cardinalis

Two-toned green and purple-red leaves on a compact Lobelia midground plant

Two-toned green and purple-red leaves on a compact Lobelia midground plant

Regular price
£7.99
Regular price
Sale price
£7.99
    Quick Facts

    Common name:

    Origin: North America

    Position in Aquarium: Midground

    Grows up to (cm): 20 cm

    Pot Size: 5 cm

    Growth rate: Medium pace

    Description

    Lobelia cardinalis is a distinctive aquarium plant with small, spoon-shaped leaves displaying vivid green upper surfaces and contrasting deep purple-red undersides. When planted in groups and viewed from the front, the purple undersides catch the light to create striking colour pockets in the midground of planted layouts.

    It grows best with medium light and CO2 supplementation, which encourage compact, bushy growth and the most vivid underside colouration. Without CO2 it can still be grown in a well-lit aquarium but tends to become more elongated and less compact. A nutritious substrate and regular liquid fertilisation keep the leaves vibrant.

    Supplied as an established potted plant, Lobelia cardinalis suits aquariums from 50 litres upward in the midground. Its distinctive two-toned leaves and compact habit make it a popular choice for nature aquarium and Dutch aquarium style compositions where colour contrast between plant groups is a key design consideration.

    Plant Sizes

    You’ll receive a healthy, rooted plant in a pot, similar to those shown. Each one is hand-checked before dispatch.

    Shipping

    Same-day dispatch on orders placed before 4pm, Monday to Friday. Tracked 24 Service from £4.99, DPD Express from £6.99.

    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica

    Customers praise this aquatic plant for arriving "very healthy" with vibrant red coloring and excellent packaging. The plant thrives in tanks, is easy to propagate, and adapts well without CO2. Some note fish may eat the leaves due to their appealing taste. Overall, shoppers describe it as hardy, beautiful, and great value.

    • A lovely plant. Very healthy. Quick delivery. A very helpful seller. Recommended.
    • Very well packaged and in a very healthy condition...the best that I have bought.
    • Arrived in excellent condition. Beautiful red veining on the leaves. Growing well.
    • 5 stars: 113 (90%)
    • 4 stars: 10 (8%)
    • 3 stars: 1 (1%)
    • 2 stars: 2 (2%)
    • 1 star: 0 (0%)
    Some of the reviews shown are from related products the merchant grouped with this one.
    s
    sharon G. (Aylesford, GB)
    Good plants

    Nice plants for my 25 litre tank, have bought these a few times, always grow fast & nice & a lovely colour.

    s
    sharon G. (Gillingham, GB)
    Great plant in my tank always, great packaging

    Great plant in my tank always, great packaging and quick delivery too always.

    E
    Edward J.L. (Motherwell, GB)
    Fit:
    Very bad
    Very good
    Tolerates Scottish soft water.

    One of the few plants that can survive Scottish soft water. Would recommend for Scottish aquarists who are fed up buying plants that melt within a short period of time.

    a
    alan s. (Kings Lynn, GB)
    plant was up to you usual standard very good

    plant was up to you usual standard very good .

    W
    W H. (Chesterfield, GB)
    Great service and excellent plant as ordered,

    Great service and excellent plants as ordered, will happily use again.

    J
    John C. (Bolton, GB)
    Need to get some more

    It's look very good in the fish tank need to get some more

    l
    liam

    All plants healthy, already grown an inch or so.

    S
    Susan

    Lovely healthy plant

    L
    LyndsW (Sittingbourne, GB)
    Plant received was tiny and didn't survive.

    Plant received was absolutely tiny and sadly didn't grow at all. I wasn't expecting a huge plant but it was really small for the price paid.

    M
    Mr

    Great

    M
    Mr

    Great

    G
    Greg W. (Exeter, GB)
    Such Good Plants - I Shall Be Back For More!

    A lovely plant. Very healthy. Quick delivery. A very helpful seller. Recommended.

    G
    Greg W. (Exeter, GB)
    10 Out of 10 For This Plant!

    A lovely plant. Very healthy. Quick delivery. A very helpful seller. Recommended.

    A
    Alastair J. (Northwich, GB)
    Hygrophila

    Usual prompt delivery and good quality plants, thriving in my aquarium after planting.

    A
    Aisha W. (Durham, GB)
    Lovely

    Hardy and easy to look after according to website.
    Only been in our brand new tank for a week but looks great.
    Wish I had more money as I'd buy so many more plants from these guys! Amazing communication. Fantastic delivery. Plants arrived very healthy. Hopefully I can keep them that way!!! 🙏 🤞

    P
    Patrick H. (Sutton Coldfield, GB)
    PERFECT CONDITION

    Arrived in absolute perfect condition and is already growing well a few days after putting it in my tank!

    J
    Judith P. (Bristol, GB)
    Small....

    Gone downhill since I used last time very small poor quality plants disappointed for the money I paid.

    S
    Samuel

    Little hard to plant as roots are short, but the plant is healthy and doing well in aquarium

    i
    irene m. (Gateshead, GB)
    Excellent

    These plants arrived in Excellent condition , Growing well in my tank

    I
    Irene M. (Glasgow, GB)
    I was surprised and impressed by the size and the healthy condition of this plant.+ quick delivery.

    AS ABOVE

    S
    Simon W. (London, GB)

    Perfect condition beautiful plant growing fast

    C
    Ciaran

    Looks lovely

    L
    Lavinia M.(. (Birmingham, GB)
    Cryptocoryne willisii

    5 potted plants received with excellent care instructions from seller. Postal delay caused 3 plants to arrive in poor condition. But followed instructions and they are all now showing lots of new leaves.
    Thank you

    J
    Jack G. (Pulborough, GB)

    Ordered via. telephone and forgot to order tissue culture type , received six stems in a pot , good condition and growing ok but with p&p cost was £10.45 .

    S
    Simon W.
    Review

    What can I say all the plants came in excellent condition growing well in the tank

    D
    Diana I.
    Review

    God this plants can grow ! Definetly fast growing and fills out nicely! Have trimmed it few times and cuttings easily get replanted and settled, definetly a great background plant to use, in any tank

    T
    Toni S.
    Review

    Lovely healthy strong plant. Many new shoots already & looking good.

    A
    Avril
    Review

    I have been buying plants from this company for several years now and recommend them to friends. The plants, as usual are of a very high standard with excellent delivery times.

    C
    Caroline W.
    Review

    Looking good and healthy. Fingers crossed for a good carpet.

    J
    Judith O.
    Review

    Excellent healthy plant

    A
    ALFRED P.
    Review

    Beautiful plant, arrived in perfect condition, growing in a low tech aquarium without co2, i am very pleased with it.

    B
    Barbara C.
    Review

    Delighted with delivery and plant arrived in excellent condition, I would certainly use this supplier again.

    Product FAQs

    Helpful details before you buy.

    Does Lobelia cardinalis need CO2?

    CO2 is recommended for the most compact, bushy growth and vivid purple underside colouration. Without it the plant can be grown but tends to grow more loosely and with less pronounced colour.

    What light level does it need?

    Medium light is the minimum. Better light combined with CO2 produces the most compact, colourful growth. In low light it becomes elongated and less attractive.

    Can I see the purple underside when the plant is growing?

    Yes. When planted in groups, the purple undersides of the leaves are clearly visible from the front of the aquarium, creating a distinctive colour effect.

    How large does it grow?

    It typically reaches 10–20 cm in height, making it well suited to the midground of most planted aquariums.

    Is it easy to propagate?

    Yes. Side shoots develop naturally and can be separated and replanted. Stem cuttings can also be taken and rooted in the substrate.

    Best Seller
    Skip to product information
    1 of 5

    Lobelia cardinalis

    Two-toned green and purple-red leaves on a compact Lobelia midground plant

    Average care Medium light CO2 recommended Midground plant
    Regular price
    £7.99
    Regular price
    Sale price
    £7.99
    • In stock

    In-stock orders normally dispatch before 4pm, Monday–Friday. Delivery details

    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica
    Lobelia cardinalis (Scarlet lobelia) Tropica

    Complete your setup

    Useful additions for your aquarium

    Care essentials chosen for this plant

    Healthier plants
    Brighter results
    Neutro T Aquarium Plant Fertiliser Recommended size
    £10.99
    Root nutrition Neutro TerraTabs - Root Tabs for Planted Aquariums

    Long-lasting nutrition
    for strong, healthy roots.

    Recommended size
    £9.99
    Superfish Aquarium Plant Tweezers Recommended size
    £4.99
    Useful additions for planting day Carefully packed with your plants Specialist aquarium plant care
    Bundle offers

    About this plant

    Lobelia cardinalis is a distinctive aquarium plant with small, spoon-shaped leaves displaying vivid green upper surfaces and contrasting deep purple-red undersides. When planted in groups and viewed from the front, the purple undersides catch the light to create striking colour pockets in the midground of planted layouts.

    It grows best with medium light and CO2 supplementation, which encourage compact, bushy growth and the most vivid underside colouration. Without CO2 it can still be grown in a well-lit aquarium but tends to become more elongated and less compact. A nutritious substrate and regular liquid fertilisation keep the leaves vibrant.

    Supplied as an established potted plant, Lobelia cardinalis suits aquariums from 50 litres upward in the midground. Its distinctive two-toned leaves and compact habit make it a popular choice for nature aquarium and Dutch aquarium style compositions where colour contrast between plant groups is a key design consideration.

    Product FAQs

    Does Lobelia cardinalis need CO2?

    CO2 is recommended for the most compact, bushy growth and vivid purple underside colouration. Without it the plant can be grown but tends to grow more loosely and with less pronounced colour.

    What light level does it need?

    Medium light is the minimum. Better light combined with CO2 produces the most compact, colourful growth. In low light it becomes elongated and less attractive.

    Can I see the purple underside when the plant is growing?

    Yes. When planted in groups, the purple undersides of the leaves are clearly visible from the front of the aquarium, creating a distinctive colour effect.

    How large does it grow?

    It typically reaches 10–20 cm in height, making it well suited to the midground of most planted aquariums.

    Is it easy to propagate?

    Yes. Side shoots develop naturally and can be separated and replanted. Stem cuttings can also be taken and rooted in the substrate.