Like all bulbous plants, Ismene must be planted at an optimal depth. If this doesn't happen, it doesn't push out or has no hold. It's a shame to learn the importance of planting depth too late. This can't happen to you, because you can discover the crucial values below.
What planting depth is suitable for Ismene onions?
The optimal planting depth for Ismene onions is 8 cm for smaller onions and 10 cm for larger onions. Also make sure there is a planting distance of 15 to 20 cm between the bulbs and protect them from voles and frost.
Don’t neglect planting depth
Ismene is an onion plant that not every gardener in this country has experience with. But the unusual blossom invites you to try this tropical plant instead of always planting tulips and daffodils.
Ismene's onions are not cheap. If you don't pay attention to the correct depth when planting, you can quickly waste money. This is when the plant does not sprout because of this.
Optimal planting depth
With twice the onion length as a rule of thumb, the gardener is well advised when planting native onion plants. Does this also apply to this plant that comes from far away? We get specific and give the depth in measurable numbers. The planting depth is:
- for smaller onions 8 cm
- for larger onions 10 cm
Tip
A single Ismene sinks in the garden. However, when planting several bulbs, you should not only maintain the planting depth but also the planting distance between two bulbs. This is 15 to 20 cm.
Eating for voles
If the Ismene does not sprout despite the planting depth being maintained, it may no longer be in the ground. Because at this planting depth the onion is not safe from voles. Therefore, plant it together with a plant basket (€17.00 on Amazon) in which it remains out of reach of mice.
Other decisive factors
Even a depth measured to the millimeter is no guarantee for the abundance of white flowers. If the bulbs of this type of plant are planted too early, they can freeze deep in the ground instead of sprouting fresh greenery.
Ismene onions tolerate zero frost. For this reason, onions that have already been purchased must be stored safely indoors until there is no longer any danger of frost in mid-May. In autumn, on the other hand, it's time to dig up the bulbs again and overwinter them frost-free until the next planting time.
Tip
When caring for Ismene in summer, pay attention to species-appropriate watering behavior. Too much moisture causes the onion to rot.
