Iris White Excelsior Bulbs - 50 Pack
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The Carbeth Plants Iris White Excelsior bulbs are ideal for gardeners seeking a reliable, low-maintenance perennial that brings elegant, creamy white blooms to borders and containers from mid-spring to mid-summer. These vigorous, hardy bulbs attract essential pollinators like bees and butterflies, though they require well-draining soil to prevent rot during the wetter winter months.
All features
| Model Part Number | IRISWHITEXCEL-50 |
|---|---|
| Brand | Carbeth Plants |
Extended Product Information
FAQs
When is the best time to plant Iris White Excelsior?
These bulbs should be planted in the autumn or winter for a spring to summer bloom.
Do I need to lift the bulbs in winter?
No, they are fully hardy in the UK and can be left in the ground year-round.
Can these be grown in pots?
Yes, they are highly suitable for patio pots and containers, provided there is good drainage.
How deep should I plant them?
Plant them at a depth three to four times the size of the bulb.
Why must I leave the foliage after flowering?
The foliage absorbs sunlight to create energy, which is stored in the bulb to ensure it blooms again the following year.
Will these attract pollinators?
Yes, they are particularly loved by bees and butterflies.
Troubleshooting
Flowers are not blooming as expected
Ensure the bulbs received enough sunlight and were planted at the correct depth; also check that soil drainage is sufficient.
Bulbs rotting in the ground
This is typically caused by waterlogged soil. Amend the soil with horticultural grit or move to a better-draining area.
Pros and Cons
Pros
- Fully hardy in UK climates
- Attracts bees and butterflies
- Requires very little maintenance
- Long flowering season from spring to summer
- Excellent for both ground beds and containers
Cons
- Requires well-draining soil to avoid bulb rot
- Foliage must be left to die back naturally
- Not suitable for heavy, waterlogged clay soil
Setup, Compatibility & Care
To ensure success, plant your Iris White Excelsior bulbs during the autumn or winter months. Choose a location with either full sun or partial shade. Dig a hole at a depth approximately three to four times the size of the bulb and place them roughly 10 cm apart. Ensure the soil is fertile and drains well; if you have heavy soil, incorporate grit or sand at the base of the planting hole. Maintenance is minimal: simply allow the foliage to yellow and die back naturally after the flowers fade, as this allows the bulb to store energy for the following season. Avoid cutting the foliage prematurely, as this can weaken the plant for the next year.