Syngonium ‘Neon Robusta’ (Pink Arrowhead Plant) – Hands-on!

Syngonium ‘Neon Robusta’ is a beautiful pink variety of the popular arrowhead vine family.

These subtropical climbers are a super versatile species, able to happily grow as a bushy houseplant, a trailing vine, or as a terrarium plant – depending on how you like to grow them.

With their dynamic arrow-shaped leaves and vibrant tones, this plant provides a welcome pop of colour wherever they go.

The Pink Syngonium make for easy plants to care for, perfect for both the occasionally forgetful plant parent and the overly keen waterer!

Find out how to make these vibrant plants shine!

Pink Syngonium

What is the Pink Syngonium? (Its Vibrant Origins & Colours)

A somewhat natural variation of the ever popular classic Syngonium podophyllum, the Pink Syngonium is made of good stock.

The stunning dusty pink colouration actually comes as a natural mutation of the less vibrant pink ‘Neon’ cultivar. So, it’s not surprising the more brightly coloured version has become the dominant one in our homes.

The characteristic arrow-shaped leaves are easily identifiable, even in their juvenile form. Though, eventually they’ll develop into broad multi-lobed shapes where the arrow softens and widens (but you can expect to wait a long time for this to happen).

The natural diversity in this plants’ size and growth pattern are heavily shaped by its environment, so to some extent you get to choose how you’d like it to look.

In the home and in a terrarium, Syngonium ‘Neon Robusta’ tends to grow as a dense clump that slowly spreads out, or if you give it something to climb it’ll definitely direct its growth upwards.

However you decide to grow this plant, with the right conditions it’s sure to reward you with plenty of gorgeous foliage.

Where to Buy the Pink Arrowhead Vine

See the links below to purchase from reputable terrarium plant shops and marketplaces (may include affiliate links). 

Image Credit: ForeverDM on Etsy.
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UK – See on Etsy

Syngonium ‘Neon Robusta’ Care & Growth

At a Glance

Plant TypeVine, foliage, large
LightingBright, indirect light
Temperature60-80°F (15-26°C)
WateringRegular, even moisture
HumidityHigh humidity (60-90%)
Growth20-30 inches

Lighting

As a vine that’s used to weaving its way through the rainforest canopy, bright indirect sunlight is what the Pink Arrowhead Vine favours.

That being said, it’s pretty forgiving on the lower end of light conditions too, though – as with all variegated plants – you can probably expect to see some loss of colour in full shade.

On the flip side, try to keep it out of direct sunlight too. The sensitive leaf structures can be prone to scorching in full sun and you’ll want to do everything you can to protect its colours!

Watering

The tropical nature of the Pink Syngonium means it likes to be evenly moist, so it’s going to appreciate regular water.

Just make sure it’s able to drain properly, otherwise you risk root rot with a constantly saturated substrate.

When growing as a houseplant, pots with drainage holes are the easiest way to guarantee you’re not waterlogging your plants.

Pink Syngonium
With the Pink Syngonium, simply water until water comes out the bottom, and voila!

They’ll do well when able to dry out a little between waterings too.

Equally, in a terrarium this plant appreciates regular moisture so it’ll thrive in sealed tropical conditions. Just make sure to balance the water in the system appropriately and provide enough drainage in your substrate.

Substrate / Soil

This resourceful species isn’t overly fussy about what it’s planted in, but mimicking its native tropical environment is always a good option.

A light substrate mix with good aeration, water retention and drainage is ideal for Syngonium ‘Neon Robusta’.

In both terrariums and pots, I like to use a coco coir base, and to supplement with orchid bark (or perlite) and earthworm castings. See my full guide on substrates for more help.

Temperature & Humidity

Being a tropical and subtropical species, Syngonium podophyllum ‘Neon Robusta’ is quite sensitive to temperature.

The fact that it’s not frost hardy shouldn’t be much of an issue in a terrarium, but it’s still important to maintain a room temperature above 10°C (50°F) and avoid areas with cold drafts or wide temperature fluctuations.

Humidity is less critical, but the pink arrowhead vine will appreciate the higher air moisture in a closed terrarium environment.

Growth

When it comes to growth, Syngonium ‘Neon Robusta’ is quite the jack-of-all-trades.

It can grow to a variety of shapes and sizes depending on the environment and how it’s planted, but terrarium conditions should temper its growth to some degree.

Though it’s technically a vine, I find these don’t really trail at all. 

As a baby plant, my Pink Syngonium grew in a super tight cluster.

They tend to have a more upright growth pattern and form pretty tight clumps, which makes them useful as foreground focal pieces in terrariums. 

Propagation

It’s super easy to propagate Syngonium ‘Neon Robusta’ through stem cuttings.

Simply cut off a tip of a reasonable length from the parent plant – ideally behind an aerial root node at a 45° angle to get the best success rate – and you can either grow that in water or plant right back into the substrate.

In you’re planting your cuttings in water, you can expect to see some decent root growth in a few weeks.

Or, if you opt to plant them back into the substrate, try to maximise the warmth, humidity and moisture for the best results. All very easy to do if you’re growing in a terrarium!

Varieties & Similar Plants

There’s a huge amount of diversity in the Syngonium genus, and besides the ‘Neon’ cultivar there’s also the varieties “Pink Splash” or “Red Spot” for those looking for pink plants with less bold variegation.

Elsewhere in the genus, Syngonium erythrophyllum ‘Llano Carti Road’ is a gorgeous vining species with a luxurious dark chocolate colour, and Syngonium podophyllum ‘Pixie’ is a cute little dwarf species with a creamy white variegation.

For other beautifully coloured vines with similar watering requirements, check out Monstera siltepecana and the Neon Pothos.

Goes Well With

As with many vibrantly coloured plants, I think the Pink Syngonium pairs best with darker foliage to really make those colours pop!

These are similarly moisture-loving tropical plants with great contrasting foliage (and more flashes of pink).

Or, you could go full pink princess and pair it with a funky Polka Dot Plant (Hypoestes phyllostachya).

Frequently Asked Questions

Is the Pink Syngonium rare?

Though perhaps once a rarity, these days it’s fairly easy to get a hold of the various varieties of Pink Syngonium – particularly Syngonium ‘Neon Robusta’.

How do you keep Syngonium Neon pink?

Preserving the gorgeous pink variegation is mostly down to the amount of light you’re giving your plant. Bright light (but not direct) is the best way to maximise the colour of the leaves.

Is the Pink Syngonium an indoor plant?

The versatile Pink Syngonium can thrive as an indoor plant in a variety of household conditions, and if your climate is hot enough you can even grow it outdoors!

Is Syngonium poisonous?

Unfortunately, the Syngonium genus on a whole is indeed toxic to animals and humans as it’s full of calcium oxalates. So be sure to keep any innocent hands or paws away from these plants.