Red with depth
The corolla carries deep red pigment without readily sliding towards pink in bright light.
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Family: Apocynaceae · Pot: 3 L · 19 cm · Height: 70–80 cm

Mandevilla hybrida Rio® Deep Red delivers an established multi-branched framework and numerous deep-red flowering points at first glance. Velvet funnels appear at different heights over glossy dark foliage, creating real volume rather than a single thin vine. Limited vining keeps the mature image dense, controlled and impressively full. Every angle reveals another active flowering tip.
It is the choice for immediate scene-setting on a large terrace, at an entrance or beside a pool when there is no wish to wait for a small plant to build a crown. A neutral pot enhances the red while the larger root reserve supports a steadier display between waterings.
Texas Superstar® recognition for the Rio® series.
Rio® Deep Red is distinguished by red with depth and two further characters specific to this exact selection.
The corolla carries deep red pigment without readily sliding towards pink in bright light.
Thick leaves create a cool green background that projects every red funnel.
Side shoots begin low to build a full crown before any significant vining appears.
Why you will love it: it delivers the intensity of a red tropical climber in a dense form that looks complete even without a large support.
Use a warm, sunny position with a compact trellis, hoop or other permanent support. Train more than one stem onto it so the Rio® series’ limited vining makes a dense, upright flowering surface.
Pair with Helichrysum petiolare, Salvia farinacea and Cordyline australis ‘Red Star’ for silver, blue and vertical burgundy contrast in separate pots.
A very bright sunny position after gradual acclimatisation. At the height of a heatwave, morning sun limits scorch and bud drop.
Water deeply as the surface dries and always empty the saucer. Alternating severe drought with saturation causes buds to drop.
Warm-loving and frost tender. Growth slows below roughly 10–12 °C, so move it promptly to a bright protected position.
The white milky sap can irritate skin and eyes. Wear gloves when pruning and prevent ingestion.
A very bright sunny position after gradual acclimatisation. At the height of a heatwave, morning sun limits scorch and bud drop.
Water deeply as the surface dries and always empty the saucer. Alternating severe drought with saturation causes buds to drop.
Use a rich but aerated mix with perlite or pumice and generous drainage. Roots require oxygen even while the plant is using water rapidly.
Feed little and often during active growth with adequate potassium and trace elements. Stop as nights cool and new growth slows.
Pinch lightly after a flowering flush and train at least two flexible stems over the permanent support. Tie them loosely where needed and remove only excessively long or weak growth before overwintering.
Move before the first cold spell to a frost-free place with abundant light and less frequent watering. Check leaf undersides for spider mites.
Once adjusted to the new light level, it activates side shoots and successive flowering tips. Stable temperature and watering in response to surface drying limit bud loss.
The established 3 L base extends selected tips while retaining many low lateral shoots. As clusters renew, the crown develops an outer ring of red flowers around a deeper green interior.
At maturity it keeps a compact supported habit 20–60 cm high and 30–50 cm wide, with more than one limited-extension stem trained over the support.
Several flexible twining stems climb a permanent support; the mature plant is not a self-supporting round shrub.
The support remains part of the plant in both states; it is never shown as a free-standing round shrub.
Rio® Deep Red belongs to Syngenta Flowers’ established Mandevilla hybrida Rio® series and is listed under product code 70003886. The series combines early flowering, strong basal branching and upright growth to 20–60 cm.
Stem extension is limited rather than absent. Young tips retain a climbing response and can be trained onto a compact permanent support, creating more flowering points over a dense upright framework.
Red anthocyanins occupy vacuoles in epidermal cells and change spectral behaviour with pH, co-pigments and metal ions. ‘Deep red’ is therefore an emergent optical trait rather than the name of one unique pigment.
Apocynaceae tissues are traversed by branched laticifer elements. When a shoot is cut, latex emerges and coagulates at the surface while carrying defensive compounds.
Six precise answers for Rio® Deep Red, from its present scale to mature behaviour.
The listed 70–80 cm is its height on arrival. Long-term placement must allow for a mature scale of 20–60 cm by 30–50 cm rather than today's young outline.
Use as the central red element on a large bright terrace, on a low plinth or beside an entrance, with open air circulation and visibility around the entire layered crown.
Water deeply as the surface dries and always empty the saucer. Alternating severe drought with saturation causes buds to drop.
Pinch lightly after a flowering flush to increase side branching. Shorten excessively long shoots before overwintering without hard-pruning a stressed plant.
It is the same Deep Red, but 3 L carries a larger root and shoot framework with more active tips, giving a more immediate visual result.
Not necessarily. The larger plant can be tied to a discreet small frame for height, but the series remains dense without one.