Sphinx Hippeastrum Bulb | Amaryllis – Creamy White Blooms with Coral-Red Veining

Add striking colour and refined detail to your home, patio or garden with Sphinx Hippeastrum, a captivating flowering bulb known for its creamy-white petals, bold coral-red veining and subtle green throat. With its dramatic markings and elegant trumpet-shaped blooms, Sphinx creates a standout seasonal display in pots, indoor displays, protected garden beds and cut flower arrangements.

Commonly searched for as Amaryllis, these flowering bulbs are botanically Hippeastrums. Hippeastrum ‘Sphinx’ is a single-flowering variety with a sophisticated patterned appearance, making it a beautiful choice for gardeners wanting something more detailed than a plain red, pink or white Hippeastrum.

The creamy-white petals are accented by coral-red lines and markings, giving each bloom depth, movement and strong visual interest. Its fresh green throat adds contrast and helps highlight the rich veining through the petals.

Supplied as a dormant bulb, Sphinx can be grown in pots or garden beds with good drainage. Plant from July to October in full sun to partial shade, leaving the neck of the bulb slightly exposed above the soil surface.

Pre-Order Note

NOTE: This is a pre-order.

Stock is expected to be ready around the end of July, however this may push into August depending on seasonal conditions and supplier availability.

Image shown is an example picture only. Flower colour, size and form may vary slightly depending on growing conditions and seasonal availability.

If there are any supply issues, we will contact you regarding substitution options.

Any items you do not wish to have substituted will be refunded.

Features

• Elegant Sphinx Hippeastrum variety
• Commonly searched for as Amaryllis
• Creamy-white petals
• Bold coral-red veining and accents
• Subtle green throat
• Single-flowering variety
• Trumpet-shaped blooms
• Striking patterned appearance
• Excellent for pots, patios and protected garden beds
• Suitable for bright indoor displays
• Great for cut flower arrangements
• Beautiful choice for gifting and feature pots
• Supplied as a dormant bulb
• Can rebloom in future seasons with proper care

Planting & Care

Plant Sphinx Hippeastrum bulbs from July to October in a position with full sun to partial shade. In warmer climates, morning sun with afternoon shade can help protect the flowers and foliage from harsh heat.

Choose a light, free-draining soil. If planting in the garden, loosen the soil to around 20cm deep and improve drainage if needed. Hippeastrums dislike sitting in wet, heavy soil, especially while dormant.

Plant with the fat end and roots facing down, leaving the neck of the bulb slightly exposed above the soil surface. Do not bury the bulb completely. In pots, the top third of the bulb may remain above the potting mix.

If growing in pots, use a quality free-draining potting mix and make sure the pot has good drainage holes. Avoid oversized pots that hold too much moisture around the bulb.

Water lightly after planting, then increase watering once active growth appears. Allow the soil or potting mix to dry slightly between waterings. Avoid overwatering, especially while the bulb is dormant or just beginning to shoot.

Feed during active growth with a balanced bulb fertiliser or pelletised chicken manure to support strong stems, healthy foliage and future flowering.

Protect from frost, especially in colder regions or when growing in pots. In frost-prone areas, Sphinx is best grown in pots so it can be moved under cover when needed.

After flowering, remove the spent flower stem but leave the foliage to continue growing. The leaves help the bulb store energy for the next flowering cycle. Reduce watering as the plant naturally moves towards dormancy.

Flowering Time

Flowering time can vary depending on climate and growing conditions.

General flowering: Approximately 6–10 weeks after planting
Typical season: Spring to early summer, depending on region and planting time

Product Details

Botanical Name: Hippeastrum x hybridum
Common Name: Hippeastrum, Amaryllis
Variety: Sphinx
Product Type: Flowering bulb
Supplied As: Dormant bulb
Flower Colour: Creamy white with coral-red veining and subtle green throat
Flower Form: Single flowering, trumpet-shaped blooms
Planting Season: July to October
Blooming Season: Spring to early summer
Aspect: Full sun to partial shade
Planting Depth: Leave the neck slightly exposed
Spacing: Approximately 10cm apart
Soil: Free-draining soil or quality potting mix
Watering: Moderate; allow soil to dry slightly between waterings
Frost Tolerance: Protect from frost
End Use: Pots, indoor displays, patios, protected garden beds, borders, cut flowers, gifting

Pet Safety Note

Hippeastrum bulbs can be toxic if eaten by pets. Keep bulbs and plant material out of reach of cats, dogs and other animals. Bulbs and plant material may also cause skin or eye irritation, so handle with care.

FAQ

Is Sphinx a Hippeastrum or an Amaryllis?

Sphinx is a Hippeastrum x hybridum, but these bulbs are commonly searched for as Amaryllis. Both names are often used by gardeners, although Hippeastrum is the more accurate trade name.

What colour are Sphinx Hippeastrum flowers?

Sphinx produces creamy-white blooms with bold coral-red veining and accents, along with a subtle green throat.

Is Sphinx a double Hippeastrum?

No. Sphinx is best described as a single-flowering Hippeastrum.

What shape are the flowers?

Sphinx produces elegant trumpet-shaped blooms with a patterned, veined appearance.

When should I plant Sphinx Hippeastrum bulbs?

Plant from July to October, depending on your climate and growing conditions.

How long until Sphinx flowers?

Flowering generally occurs around 6–10 weeks after planting, depending on temperature, bulb condition and growing environment.

Can Sphinx Hippeastrum grow indoors?

Yes. Sphinx can be grown indoors in a bright position, such as near a sunny window. Avoid dark rooms and avoid overwatering while indoors.

Can Sphinx grow in pots?

Yes. Sphinx performs beautifully in pots and containers. Use a quality, free-draining potting mix and make sure the pot has good drainage holes.

Can Sphinx grow outdoors?

Yes, in suitable warm or frost-protected areas. In cooler regions, grow in pots so the bulb can be moved under cover when needed.

How deep should I plant Hippeastrum bulbs?

Plant with the fat end and roots facing down, leaving the neck of the bulb slightly exposed above the soil. In pots, the top third of the bulb may remain above the potting mix.

Does Sphinx need full sun?

It grows well in full sun to partial shade. In warmer areas, partial shade or afternoon protection can be beneficial.

Is Sphinx frost hardy?

Sphinx should be protected from frost, especially in colder regions or when grown in pots.

Will Sphinx flower again next year?

Yes. With proper care, feeding and a suitable dormancy period, the bulb can rebloom in future seasons.

Is Sphinx good for cut flowers?

Yes. Sphinx is suitable for cut flower arrangements and elegant indoor displays.

Is Sphinx pet safe?

No. Hippeastrum bulbs can be toxic if ingested by pets, so keep them away from cats, dogs and other animals.

What are they supplied as?

They are supplied as dormant bulbs, ready for planting during the recommended season.

Is this a pre-order?

Yes. This item is a pre-order. Stock is expected around the end of July, but may push into August depending on seasonal conditions and supplier availability.

What happens if there is a supply issue?

If there are any supply issues, we will contact you regarding substitution options. Any items you do not wish to have substituted will be refunded.

What Can You Purchase From Oldboy’s Flowers’ Online Store?

We have a wide selection of Australian grown plants that we deliver as mature plants or mature bulbs. We also supply gardening tools, fertilisers, decorative garden lights, plant hangers and flower pots.

We love chatting with avid gardeners and sharing our knowledge with those with “not so green” fingers, so feel free to contact us.