Bacopa Plants for Sale — Cascading Colour All Season Long

Bacopa — botanically Chaenostoma cordatum, previously known as Sutera cordata — is one of the hardest-working flowering plants you can add to an Australian garden. Originally from the wetter regions of South Africa, it produces an almost continuous cascade of delicate five-petalled flowers in white, pink, blue, and lavender from spring through autumn, with minimal effort and zero deadheading required.

At Online Plants, our Bacopa range is hand-picked for Australian performance — including the heat-tolerant MegaCopa series, which outperforms standard varieties in Melbourne summers and remains in flower for months on end. Whether filling hanging baskets on a Melbourne balcony, creating cascading pot displays in Sydney, or planting low-maintenance groundcover along a Brisbane garden path, Bacopa delivers season-long colour with exceptional ease. Every plant leaves our nursery fresh, packed with care, and covered by our exclusive 30-day grow guarantee.

What Is Bacopa? Understanding the Name Confusion

The plant sold in Australian nurseries as 'Bacopa' is botanically Chaenostoma cordatum — previously Sutera cordata. The nursery trade name 'Bacopa' has stuck despite reclassifications. Importantly, there is a completely separate genus also called Bacopa — Bacopa monnieri (Water Hyssop or Brahmi) — used in Ayurvedic medicine as an aquatic herb. These are entirely different plants. When buying trailing flowering annuals for baskets and pots, look for Sutera, Chaenostoma, or MegaCopa Bacopa — not Bacopa monnieri.

Australian Climate Performance

Bacopa is broadly well-suited to most Australian climates but is not frost-hardy. In frost-free zones (coastal Melbourne, Sydney, Brisbane, Perth), it may persist as a perennial through mild winters. In frost-prone areas (inland Melbourne, Canberra, highlands), treat it as an annual — replant fresh each spring from September.
•    Melbourne: Plant after last frost (September–October). MegaCopa varieties outperform standard Sutera in hot northerly wind conditions. Afternoon shade improves summer performance.
•    Sydney & Brisbane: Near year-round flowering possible in frost-free coastal zones from August.
•    Adelaide: Spring through autumn planting. Protect from harsh afternoon summer sun.
•    Perth: Plant from August. Excellent performance in coastal Perth with consistent moisture.
For Melbourne and Adelaide, the MegaCopa series is the recommended choice for reliable performance through temperatures exceeding 35°C.

Choosing the Right Position

Bacopa performs best in full sun to part shade — 4–6 hours of direct sun daily. Full sun maximises flowering, but afternoon shade protection after 1pm improves summer performance across most Australian climates.
•    Full morning sun + afternoon shade = optimal for Melbourne, Adelaide and inland areas
•    Avoid exposed windy positions — wind rapidly desiccates baskets and causes bud drop
•    In Brisbane and tropical QLD: part shade preferred during peak summer months
•    Balcony plantings: east or north-facing aspects are ideal; west-facing can scorch in Melbourne summers

Soil and Potting Mix

Drainage is non-negotiable — waterlogged roots cause rapid plant failure. Bacopa prefers a soil pH of 5.6–6.5 but tolerates a wide range.
•    Garden beds: well-draining soil enriched with compost. In Melbourne clay, raise beds 15–20cm and add gypsum
•    Pots and baskets: premium potting mix with added perlite for aeration — never garden soil
•    Coconut fibre or sphagnum basket liners dry out faster than plastic-lined baskets — increase watering frequency
•    Repot container plants every 12–18 months as roots fill the container

Planting — The Thriller–Filler–Spiller Method

Bacopa is the quintessential 'spiller' plant in container design. Apply the classic Thriller–Filler–Spiller formula:
•    Thriller: Tall centrepiece (upright geranium, petunia, cordyline)
•    Filler: Mounding mid-height plant (diascia, calibrachoa, lobelia)
•    Spiller: Bacopa — cascading over the rim to soften the container
Spacing guide:
•    30–35cm hanging baskets: 3–5 Bacopa plants positioned around the perimeter
•    Patio pots 30–40cm: 2–3 plants around the rim combined with upright fillers
•    Garden bed groundcover: 25–30cm apart — plants knit together within 6–8 weeks
•    Window boxes: every 20–25cm for an immediate full display

Watering — The Most Critical Care Factor

Consistent moisture drives continuous flowering. Even brief dry-out causes bud drop — but resume watering and blooms return within 10–14 days.
•    Garden beds: 2–3 times per week in spring/summer; once per week in cooler months when established
•    Hanging baskets: daily in Melbourne summer. Check by pushing a finger 2–3cm into the liner
•    For moss/sphagnum liners: submerge the entire basket in a bucket of water for 5–10 minutes to ensure full saturation
•    Pots: water when top 2cm feels dry — every 1–2 days in summer, 3–4 days in autumn
•    Reduce watering significantly in winter — cold + wet soil = root rot
•    Install drip timers or self-watering inserts for Melbourne heatwave periods

Which Bacopa Is Right for You? Compare All Varieties

Variety	Height	Spread	Flower Colour	Best Use
Bacopa MegaCopa Pink	10–15cm	30–50cm	Deep pink	Baskets, pots, borders
Bacopa MegaCopa Blue	10–15cm	30–50cm	Mauve-blue	Baskets, pots, borders
Bacopa MegaCopa White	10–15cm	30–50cm	White	Baskets, pots, groundcover
Bacopa Blue (standard)	10–20cm	30–45cm	Pale mauve-blue	Shade baskets, pots
Bacopa White (standard)	10–20cm	30–60cm	White	Groundcover, baskets
Bacopa Pink (standard)	10–20cm	30–60cm	Soft pink	Baskets, window boxes

Fertilising

Light, consistent feeding sustains nonstop blooms. Avoid heavy nitrogen doses — they promote foliage over flowers.
•    Add slow-release fertiliser at planting time in spring for baskets and pots
•    Supplement with balanced liquid fertiliser every 10–14 days through spring and summer for containers
•    Garden beds: monthly slow-release granular is generally sufficient
•    In late summer (Feb–Mar): potassium-rich liquid feed encourages continued late-season flowering
•    Stop fertilising entirely in winter

Pruning and Trimming

Bacopa is self-cleaning — no deadheading needed. Occasional trimming improves density and longevity.
•    Trim stems by one-third in mid-summer if plants become leggy — new growth appears within 2–3 weeks
•    Baskets: light trim every 4–6 weeks maintains a full, neat cascading shape
•    After heat stress: trim lightly and feed with liquid fertiliser to stimulate a fresh flush
•    Propagation: 5–8cm stem cuttings taken at pruning time, dipped in rooting hormone, root within 2–3 weeks at 20–25°C — ideal for overwintering favourite varieties indoors

Overwintering in Australia

In frost-free zones Bacopa may persist through winter as a semi-dormant perennial. In frost-prone areas treat as an annual and replant fresh each spring.
•    Frost-prone Melbourne gardens: move pot-grown plants to a sheltered frost-free spot through winter
•    Cold inland areas: treat as annual, replant from September
•    Coastal QLD/NSW: light winter flowering with strong pickups from August
•    Take stem cuttings in Feb–Mar to overwinter indoors for replanting the following spring

Best Companion Plants for Bacopa

Bacopa's soft pastel tones and trailing habit make it one of Australia's most versatile container spillers:
•    Petunias: the classic combination — trailing Bacopa softens upright or mounding petunias
•    Calibrachoa (Million Bells): similar scale and care — excellent multi-colour basket partners
•    Verbena: both trail well; share sun and moisture requirements
•    Lobelia: ideal for shaded basket positions — blue Bacopa with lobelia creates a cool monochromatic palette
•    Geraniums (Pelargoniums): geranium as thriller, Bacopa as spiller — a Melbourne summer classic
•    Silver foliage plants (Helichrysum, Dichondra Silver Falls): amplify Bacopa's pastel tones beautifully
•    Avoid pairing with drought-tolerant plants (succulents, lavender) — moisture needs are incompatible

Frequently Asked Question - FAQs

What is the difference between Bacopa, Sutera and Chaenostoma?

They are the same ornamental trailing annual — just different names from different periods of botanical classification. Originally Sutera cordata, then reclassified as Chaenostoma cordatum, the nursery trade name 'Bacopa' has stuck. Note: there is an entirely separate genus Bacopa monnieri (Water Hyssop/Brahmi) — an aquatic medicinal herb. When buying trailing flowering annuals for baskets and pots, look for Sutera, Chaenostoma, or MegaCopa Bacopa — not Bacopa monnieri.

Does Bacopa come back every year in Australian gardens?

In frost-free zones — coastal Sydney, Brisbane, Perth and mild Melbourne suburbs — Bacopa can persist as a short-lived perennial, going semi-dormant in winter and reshooting from spring. In frost-prone gardens (inland Melbourne, Canberra, highlands), treat it as an annual and replant from September. Taking stem cuttings in late summer is a reliable, economical way to overwinter plants indoors for replanting the following season.

Why has my Bacopa stopped flowering?

The two most common causes in Australian gardens are heat stress and inconsistent watering. Above 35°C, Bacopa may temporarily pause flowering — move to afternoon shade, maintain moisture, trim lightly and feed; flowers typically return within 10–14 days. If the plant dried out completely, resume consistent watering — blooms return within two weeks. Insufficient light (under 4 hours daily) is the third most common cause.

What is MegaCopa Bacopa and is it better than standard Bacopa?

MegaCopa is a specially bred Sutera range offering enhanced heat tolerance, denser foliage with no gaps, larger flowers, and a longer bloom season compared to standard Sutera cordata. Standard Bacopa can develop bare patches and may stop flowering in Melbourne's extreme summer heat; MegaCopa maintains density and flower coverage through significantly higher temperatures. For Melbourne, Adelaide, and hot inland areas, MegaCopa Pink, Blue and White are strongly recommended over standard varieties.

How many Bacopa plants do I need for a hanging basket?

For a standard 30–35cm hanging basket, plant 3–5 Bacopa plants positioned around the perimeter to trail over the edge. For a full, immediate effect use 4–5 plants. If combining with a centrepiece thriller plant, 2–3 Bacopa plants around the rim is sufficient. For garden bed groundcover, space 25–30cm apart — plants knit together into a continuous carpet within 6–8 weeks.