1/8/2024 0 Comments Dutch irisIt's not a 100% certain method as if we are unlucky and the weather turns mild and warm, we could still get some foliage growth, but at least it will be less than if we plant too early.Ĭome spring they will need to be fertilized lightly a couple of times with a fertilizer suitable to your local conditions. I do the same to prevent freeze damaged on fall planted garlic. Here that usually means late October or mid November, your area may differ.The idea is to give them enough time to root, but not allowing too much foliage growth. Wait until the soil temperature is at 10℃/50℉. Plant them at the same time as tulips should be planted in your area. In a mild winter this may not be much of a problem, but if the foliage is damaged in the winter, it means less energy to build a new bulb and less bloom in subsequent years. One of the problems with the Dutch Iris is that they starts to grow very early. We are far north and the winters are long and the summers cold and short. Some may object that I'm in USDA 7b and should have no problems with Dutch Irises, but keep in mind that the USDA zones really aren't relevant for the Scandinavian climate. As I noted that a few members in colder zones have problems with getting repeat performance from these irises, I though I'd start a discussion here as well. Nausea, salivation, vomiting, abdominal pain, lethargy, diarrhea, elevated temperature following ingestion skin irritation upon contact with seeds, rootstock, or cell sap.In the bulb forum I have previously mentioned a method that can boost hardiness and bloom of the Dutch Iris. SKIN IRRITATION MINOR, OR LASTING ONLY FOR A FEW MINUTES. Poisonous to Humans: Poison Severity: Low Poison Symptoms: CAUSES ONLY LOW TOXICITY IF EATEN.Landscape: Landscape Location: Container Houseplants Patio Small Space Landscape Theme: Cutting Garden Design Feature: Border Mass Planting Problems: Contact Dermatitis Poisonous to Humans Problem for Cats Problem for Dogs Problem for Horses.Leaves: Leaf Color: Green Leaf Arrangement: Rosulate Leaf Shape: Lanceolate Linear Hairs Present: No Leaf Length: > 6 inches Leaf Width: Flowers: Flower Color: Black Blue Gold/Yellow Orange Purple/Lavender Red/Burgundy White Flower Value To Gardener: Good Cut Showy Flower Bloom Time: Spring Flower Shape: Funnel Flower Petals: 6 petals/rays Flower Size: 1-3 inches Flower Description: 1-several flowers at the top of a naked stem, 6-parted with 3 outer, spreading or pendent "falls" and 3 inner, erect "standards", variously colored.
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