Persicaria praetermissa

(Rated once)

Also known as Persicaria praetermissa 'Rubra' and 'Ruby'
Narrow, spear-shaped leaves
Brown-red tones, wine red leaf underside
Slanting to horizontal growth
Rarely available

Out of stock

Do you want us to send you an e-mail when this item is available again? Yes, please drop me a line

Express delivery possible

I want to order to

confirm

Middle ground

Aquarium Plant Characteristics

Difficulty Medium

Growth Fast

Light Medium

Maximum water hardness for this aquarium plant in the aquarium

Water hardness max. Medium

Recommended care height 10-20 cm

CO2 Yes

Discus suitable Yes

Variation

Pot - Ø 5 cm (out of stock)

€

Please choose a variation

€

incl. 7% VAT

Quantity:

Item is now in your shopping cart!

View my cart

Item question

We’re here for you!

Please enter your question and e-mail and we’ll contact you as soon as possible. It usually takes us up to 24 hours during business days to respond.

Thank you for your question!

Thank you, we’ll get in touch!

Close window

You already sent us a question.

Please wait a few minutes

Description

This water knotweed was first introduced as Polygonum sp. 'Ruby' and later identified as Persicaria praetermissa ( = Polygonum praetermissum). This species is native to large areas of tropical Asia and Australia. It mainly colonises wet places and stream edges as a terrestrial or marsh plant, but can also grow under water.
This Persicaria has interesting-looking, narrow spear-shaped leaves and forms beautiful brown-red to brown-orange colours in its underwater form. Another special feature is its squarrose, diagonal to horizontal growth. The shoots are sparsely branched and grow to at least 35 cm long. The stem is relatively firm and wiry, light green to brownish, about 1.5 mm thick, with short, backward-facing bristles. The stem nodes are about 2 cm apart. The alternate, up to approx. 7.5 cm long leaves have an about 8 mm long petiole.

Submers

Persicaria praetermissa is not too difficult, but medium to strong lighting and a good supply of CO₂ and nutrients are an advantage. The plant grows rather quickly and can be easily propagated by cuttings. Older, unsightly shoots with many water roots are best removed and replaced with new cuttings. After severe pruning, new growth is often sparse, so it is better to remove the old stumps and replace them with shoot tip cuttings.

With its striking, horizontal to ascending growth habit, special leaf shape and rather dark colouring, this tropical knotweed species works best as an accent plant in the aquarium midground, contrasting with fine-leaved, light green plants. Persicaria praetermissa is also interesting as an emersed plant for paludariums and Wabi-Kusa.

Persicaria praetermissa is native to tropical Asia and Australia, where it mainly grows emersed along stream banks and on wet ground; it also copes when submersed.¹ It first reached the trade as Polygonum sp. 'Ruby'.¹ Long equated with Polygonum, the genus Persicaria is now regarded as distinct.³

Underwater the narrow, hastate leaves take on reddish brown to orange-brown tones and are wine red underneath; the wiry stem bears short, backward-pointing bristles.¹ In the midground it provides accents, especially next to fine-leaved, light green plants; medium to strong light and a good supply of CO₂ and nutrients are beneficial. (read more)

Synonyms	Polygonum sp. 'Ruby'
Complete botanical name	Persicária praetermíssa (Hook. f.) H. Hara
Family	Polygonaceae
Genus	Persicaria
Difficulty	medium
Usage	Background, Midground
Growth	fast
pH value	5 - 7
Temperature tolerance	18 - 30°C
Carbonate hardness	0 - 14°dKH
General hardness	0 - 30°dGH
Propagation	Cuttings
Can grow emersed?	yes
Source	Flowgrow