

Tropica's nursery-potted Lobelia cardinalis — an Easy-grade live plant for planted tanks.
Lobelia cardinalis
Tropica's nursery-potted Lobelia cardinalis — an Easy-grade live plant for planted tanks.

Live plants transform a fish tank from a box of water into a working ecosystem — they oxygenate, absorb nitrates, provide shelter, reduce algae, and lower fish stress. This guide covers the easiest plants for beginners, planting technique, lighting, and how plants make every fish you buy from us thrive.
A nursery pot is a small thing, but it tells you a lot: the plant inside was raised by a professional grower, shipped live, and handed over ready to plant. This particular pot holds Lobelia cardinalis from Tropica, listed within the Lobelia family of our potted aquarium plants and aimed squarely at UK planted-tank keepers.
Strip the listing back to its record and three entries remain. The botanical identity is Lobelia cardinalis. The care grade is Easy — no advanced techniques implied, no exotic equipment assumed by the rating. The growth form is logged as stem in our classification. We publish only what the file supports, because a plant page that guesses is a plant page that mis-sells.
There is homework, though it is light. Every plant we sell carries the same standing instruction: compare its light, fertiliser and CO2 needs with the layout you are running. Take the note seriously — it comes from the product record itself, and it is the difference between a plant that joins a compatible system and one dropped into the unknown.
Live plants also reward a little patience at the planning stage. Decide the tank's look before stock arrives, settle the pot's position with yourself in advance, and the planting session becomes a calm half hour instead of a scramble. Treat the wait for delivery as design time: most planting regrets trace back to rushed layouts rather than to the plants themselves, and a settled plan costs nothing. The product, for its part, is ready the moment you are.
This page sells a single product with live stock status — what you see is what ships. Order with the layout in mind: count positions, convert positions to pots, and bundle the lot into one purchase together with companion plants from the range. If the choice between two pots has you stuck, send us the question before the order; advice costs nothing and replanting costs an afternoon.















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