Anyone grow Annual Vinca (Catharanthus roseus)from seed?

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evelyn_inthegarden Sierra Foothills, CA(Zone 8a) Apr 11, 2017

Hello. I am trying to grow some annuals to fill in before the perennials get large enough in my White Flower Border. I have a few established plants, and I had to remove some items that were overgrown, like lilac suckers and a ground cover that went amuck.

One thing that I have never grown from seed is vinca. I read that it is very difficult to grow from seed. It has to be kept warm, easy enough, but other factors may come into play since it is so tiny and slow-growing it is prone to a host of various fungal diseases. It must be completely covered from light until it germinates.

Does anyone grow this plant and have you had good success with it? (I do not have a greenhouse, but shelves and heat mats.)

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evelyn_inthegarden Sierra Foothills, CA(Zone 8a) Apr 24, 2017

Well, it doesn't appear that anyone has. So far, mine have sprouted, but are still very tiny.

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DonShirer Westbrook, CT(Zone 6a) Apr 26, 2017

I grew some many years ago when I didn't have a light stand. I didn't keep good notes then, so all I remember is that they were pretty enough but less than a foot high. I don't remember having any trouble growing them from seed, but didn't try them again.

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DonShirer Westbrook, CT(Zone 6a) Apr 26, 2017

I grew some many years ago when I didn't have a light stand. I didn't keep good notes then, so all I remember is that they were pretty enough but less than a foot high. I don't remember having any trouble growing them from seed, but didn't try them again.

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