Super easy, needs soil that does dry out, occasionally, and the more Sun the better. Should transplant well, if not denied watering. Grown it for years, in the white form called 'White Pearl'. Species latifolia, I believe.
Especially easy from seed.
Included only one close-up photo in my blog, this year, and during this Month.

Photo of the perennial pea, White Pearl.

Thanks..yours is beautiful. Do you think I can try to root it in water?
If not, I will try to transplant it next spring..

Let it go to seed. The seed is so easy and as big as Nasturium seed, and it may take only one season of growth for it to get large enough to bloom.

Thanks so much I will.