I received 6 bare root astrantia in early November. I live in zone 4. I have started them indoors. Since it is so late, should I leave them indoors until Spring? -
Yes, but they will need to be put into dormancy when indoors. You can do this by placing them in a cool, dark place and cutting back on watering. Bring them out again about a month before the last frost date and resume normal care.
I have some Astrantia seeds that needed cold stratification in the fall. Well, it's January, what can I do so that I have a successful planting this spring?
Since they require a cold period in order to germinate, fall is really the most ideal time to plant the seeds. However, once they are cold treated, you can also plant them indoors in well-draining potting soil, keeping the soil warm and somewhat moist. By spring you should have adequately sized seedlings that can be transplanted outdoors. Here is more information on the plant: https://www.gardeningknowhow.com/ornamental/flowers/astrantia/astrantia-masterwort-plant.htm
The flowers are fresh and healthy, but the leaves are turning dark brown. I have several different plants on all sides of the garden and they are all the same. Please help.
It sounds like a fungus, but I am not certain which one. Treat the plants with a fungicide and this should help.
Do you have to deadhead them? When do you cut the plant down?
Deadhead them when they get brown. Take them off just above the next area of growth. Deadheading is good with these as they are self seeders.
Can I plant astrantia seeds in the fall? I had one plant of Moulin Rouge which flowered. I let the flowers dry and have harvested seeds, and I would like to start some plants now, if I can. I'm in Zone 7B. By the way, rabbits love the tender astrantia plants.
Fall would be the best time to plant these seeds. They need a period of cold in order to germinate. Here is more information on the plant: https://www.gardeningknowhow.com/ornamental/flowers/astrantia/astrantia-masterwort-plant.htm
How do I grow Astrantia from seed? I need step by step instructions.
Since they require a cold period in order to germinate, fall is really the most ideal time to plant the seeds. However, you can also attempt this cold treatment (called stratification) now. Here is the stratification process: soak seeds in lukewarm water for 48 hours to soften seed coat. Mix seeds with damp sphagnum moss or peat and place in a plastic zip-loc bag for 4-6 weeks at room temperature. Then place in the refrigerator for 60 to 90 days to mimic a natural winter season. After the 90 days, sow in trays or pots.
Once they are cold treated, you can plant them indoors in well-draining potting soil, keeping the soil warm and somewhat moist. When you have adequately sized seedlings, they can be transplanted outdoors. Here is more information on the plant: https://www.gardeningknowhow.com/ornamental/flowers/astrantia/astrantia-masterwort-plant.htm
I have used various repellents but to no avail. The rabbits strip the plant down to just stalks. Will it come back later or next year?
This article may have suggestions that will help: https://www.gardeningknowhow.com/plant-problems/pests/how-to-keep-rabbits-out-of-gardens.htm
As long as the stem/roots are still intact, I believe it should regrow.