Many flowers, a clean outline
It was selected primarily for its high number of flower stems, allowing the blue display to look abundant without losing the clump’s organised form.
Agapanthus 'Su Casa '® 17cm
Normal price
€24,90
What does the legal guarantee mean for plants?
The legal guarantee concerns the plant’s conformity at delivery. It is not a guarantee of survival or growth for two years. Each issue is assessed taking into account the nature of the plant, its care and the conditions in which it is kept. Your statutory rights remain unaffected.
Agapanthus ‘Su Casa’®
Compact in height, generous with flowers — it feels at home everywhere 💙
- Evergreen foliage
- Very early flowering
- Abundant blue flowers
- Pot & ground
Agapanthus ‘Su Casa’® fills the scene with blue umbels held lightly above fine green foliage. Each head opens into many small, tubular flowers, while the numerous flower stems create successive layers of colour. Its early start and generous flowering give the compact clump a presence far more abundant than its quiet outline suggests. The result is bright, crisp and full of summer character.
Repeated along a path, it creates rhythm; on a terrace, it becomes a blue focal point among lower planting. The evergreen base keeps the composition organised through mild seasons, even without flowers. Beside white blooms or fine ornamental grasses, the rounded umbels gain a clear outline without making the space feel heavy.
What makes it special
‘Su Casa’® stands out by combining exceptional flowering power, an early start and a compact habit in one balanced cultivar.
Early to take centre stage
It begins flowering early in the Agapanthus season and may continue producing new flower stems, depending on the climate and growing conditions.
Compact, but never timid
Its controlled height is paired with rapid formation of a full base, giving the plant a strong presence without allowing it to dominate the composition.
Why you will love it: it delivers the effect of a large blue floral display in a form that fits easily on a refined terrace or in a mixed border.
In the garden & on the balcony Placement & plant combinations How to use its compact habit and which plants bring out the clear blue
Best position
At a mature flowering height of about 60–70 cm, ‘Su Casa’® suits the front to middle layer of a deep border or a repeating blue line along a path. In a pot, it works best on its own or as the tallest element in a lower composition, keeping its numerous flower stems fully visible.
For distinct repetitions, allow about 60 cm from centre to centre, bearing in mind that clump width can change with age and position. This leaves room for the strap-shaped foliage without compressing it between neighbouring plants.
Compatible planting
Its blue flowers are highlighted by pure white, silver-green foliage and fine glaucous textures. Keep the composition in a sunny, free-draining position and place more drought-tolerant plants at the drier edge of the irrigation zone.
- Agapanthus ‘Mi Casa’ — the related white cultivar creates a crisp blue-and-white pairing, with a similar height, evergreen foliage and the same preference for sun.
- Oenothera lindheimeri — place it behind or between the clumps, where its airy white flowers soften the rounded umbels in a bright, free-draining border.
- Festuca glauca — place it low at the front for glaucous texture and a clean outline; use the drier edge, where it will not receive the Agapanthus’s more frequent summer watering.
Care at a glance
Light
Full sun encourages maximum flowering. It tolerates light partial shade, but may produce fewer flower stems.
Watering
During active growth, water when the upper layer begins to dry. Excess water must drain away quickly and never remain around the roots.
Climate & hardiness
Evergreen in mild conditions. Protect the foliage and roots from severe frost, cold winds and prolonged cold, wet weather.
Safety
Not edible. Ingestion may irritate the mouth, while the plant sap may irritate the skin and eyes.
Detailed careComplete care guideLight, planting, pots, watering, feeding, flowering and winter protection in detail
Light and exposure
Give it an open position in full sun so it maintains a compact habit and makes the most of its high flowering capacity. If the plant previously stood in a sheltered or shaded position, increase its hours of direct sun gradually to prevent foliage scorch.
Planting in the ground
Plant at the same depth as before, with the crown level with the soil surface. Choose fertile soil that retains useful moisture during active growth but does not remain waterlogged, especially in winter.
Potting and repotting
Use a pot with unobstructed drainage holes and a stable, airy growing mix. Do not move it straight into an excessively large pot; once the roots have genuinely filled the available space, increase by only one moderate pot size.
Watering and establishment
After planting, water thoroughly whenever the upper layer begins to dry until the roots are established. Check the mix more frequently in hot weather; in the ground, an established plant mainly needs support during prolonged dry spells. Reduce watering noticeably in winter without allowing the evergreen foliage to become dehydrated.
Feeding and flowering
From the start of new growth until early autumn, provide balanced nutrition according to the plant’s needs and the soil’s fertility. Regular, controlled feeding matters more in pots because the mix’s nutrient reserves are depleted more quickly. Avoid excessive nitrogen, which may favour foliage at the expense of flowers.
Winter, grooming and division
‘Su Casa’® is evergreen and needs a sheltered, free-draining position when severe frosts are expected. Remove flower stems once they finish, but retain the green leaves. Divide only when the clump needs it, preferably in spring, knowing that recent division can temporarily reduce flowering. Wear gloves and wash your hands after handling.
Development over timeFrom the first flowers to a full clumpHow the base, flowering and behaviour change in the ground or in a pot
Early by selection
‘Su Casa’® was selected for its ability to flower very early and produce numerous flower stems. This is a genetic trait of the cultivar, not a guarantee of the same number of flowers in every season or immediately after repotting.
In the ground
Once established, the base thickens into a full evergreen clump. Its total flowering height remains about 60–70 cm, while the actual number of flower stems depends on sunlight, age and the conditions of the season.
In a pot
Its rapid formation of a full base is particularly noticeable in a pot. When the roots use the available space without becoming depleted, the contrast between the lower foliage and the numerous blue flower stems becomes the plant’s defining decorative feature.
Mature form & dimensions
Established clumpFlowering height 60–70 cmIndicative spread 60 cm
Fleshy, strap-shaped blades emerge from the base, while upright flower stems lift the blue umbels above the foliage. Mature flowering height is about 60–70 cm, with an indicative clump spread of 60 cm.
Form through time
Flowering seasonNumerous blue umbels rise above the leafy base.
Mild winterGreen leaves remain without the seasonal flower stems.
Flowering may begin in May and continue into August or September. The evergreen base remains in mild conditions; winter protection is needed in areas with frost.
What to expect after planting: The cultivar was selected for early performance, but every newly planted specimen first needs to balance its root system. Do not judge its full potential from a single flowering season; the characteristic full display settles in as the clump establishes.
History & origin Cultivar origin Selected by Tim Wyckstandt in Aalter, Belgium
In 2019, Tim Wyckstandt selected an agapanthus in Aalter, Belgium, that flowered just months after sowing. It was his first selection at Agapanthuskwekerij, within a programme involving more than 20,000 seedlings. Subsequent observation highlighted abundant, prolonged flowering.
The selection received the denomination ‘19005’ and is marketed as Su Casa®, distributed internationally through Van Vliet New Plants alongside the white Mi Casa®.
Greenleaf for Plant NerdsScience nobody asked forBotanical details for anyone curious about what lies behind the plant’s appearance
Two to three flower stems
In ‘Su Casa’®, one new leaf shoot can be accompanied by two to three flower stems. Producing numerous stems from a compact base explains the high ratio of umbels to foliage.
One “flower” made of many
The spherical Agapanthus head is an umbel. Each small tubular flower has its own stalk, and these stalks converge at the top of the same flower stem. This radial arrangement gives the head its rounded volume.
Frequently asked questions
Useful answers about early flowering, sun, pots, winter and the safety of ‘Su Casa’®.
01When does ‘Su Casa’® flower?
This cultivar is considered very early for an Agapanthus. Flowering may begin in May and continue into August or September, although the exact start and duration vary with the local climate, sunlight and the plant’s establishment.
02Does it need full sun?
To make the most of its high flowering capacity, choose full sun. It can grow in light partial shade, but will usually produce fewer or weaker flower stems. Acclimatise a plant that previously grew in shade gradually.
03Is it better in a pot or in the ground?
It suits both. Its compact habit and rapid formation of a full base make it a particularly strong choice for pots, while in the ground it works beautifully in groups or repetitions, provided the position is sunny and free draining.
04Why might it produce fewer flowers than expected?
Common causes include insufficient sun, complete drying during active growth, an excessively large pot, recent division or inadequate winter protection. A newly repotted plant may also invest in root establishment first.
05Does it stay green in winter?
‘Su Casa’® is evergreen, so it retains foliage in mild conditions. Severe frost, cold winds or prolonged winter wet can cause damage, so a potted plant needs a sheltered position when conditions become extreme.
06Is it safe around children and pets?
It is not intended for consumption, and leaves or roots should not be chewed. Ingestion may irritate the mouth, while the sap may irritate skin and eyes. Keep it out of easy reach and wear gloves when dividing the clump.
📦 Your plant travels protected
Every order is prepared with care so your plant arrives upright, secure and safe.
Individual protection
Plants in pots with a capacity of 3 litres or more are placed in individual boxes that hold the pot securely and reduce the risk of tipping over.
Sturdy packaging
We use reinforced cardboard designed to protect against impacts and vibration during transport.