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Advice For seed starting

Arlington, GA(Zone 8a)

We've ordered some Tropical seeds that should be arriving any day now,and would like to know if anyone has had any experience starting any of them? Thanks for any advice you can give.

ETLINGERA elatior "Torch Ginger"
ETLINGERA venusta ,
CASSIA javanica "Pink and white Shower tree" ,
CASSIA Roxburghii ,
COSTUS guaniensis "Spiral ginger" ,
COSTUS speciosus "Crepe ginger"
HEDYCHIUM gardnerianum "Kahili ginger"
HELICONIA mixture ,
NELUMBO nucifera "Sacred Water Lily"
PASSIFLORA mixture ,
TACCA integrifolia "Bat flower, Cat's Whiskers"
TACCA nivea "White Bat Flower

Dublin, CA(Zone 9a)

Most of the Cassias that I've tried from seed have needed to be soaked in warm water for 24 hrs before sowing them. A heat mat will probably be helpful with most of these--a lot of tropicals need bottom heat to germinate, or at the very least will germinate better with it.

Northern California, United States(Zone 9a)

I have a book I picked up years ago, 'From Seed to Bloom' by Eileen Powell and it had two listed.

Sowing:indoors-5-8 weeks before last frost. Outdoors -early spring, when soil is cool and light frost is still
possible, or late autumn.
Depth: Just cover
Germinating time: 20-25 days
Requirements: Soak seeds for 2 hrs. in warm water, provide 70-75F thereafter.

Sowing: indoors 8 weeks before last frost. Outdoors After last frost
Depth: 1/4"
germinating time: 30-365 days
Requirements: Difficult. use only fresh seed. Soak for 12 hrs in warm water, sow in flats and keep at 80 F.

Tacca seed thread
I did a Google search for tacca and there were a couple of sites that had tips for it, said they were not easy.

Another Google search 'sowing heliconia seeds' brought up info "The seed requires soaking for two/three days and sown in a well drained damp compost at a temperature of 30C. The seed may take a couple of months to germinate and the seedlings will need a temperature of 30C by day, 18C to 22C by night and good sunlight to bring them on. Sow in late spring when our improving weather conditions will help"
Actually, it was from this site which came up quite often. (I love Google!)

Frederick, MD(Zone 6b)

I've also heard that Passiflora seeds benefit from an overnight soak in orange juice... In Hawaii, somebody told me they put their fresh passie seeds into a glass of passion juice, allowing them to soak until the juice has fermented for best germination.

We'll see. I just sowed some P. carulea, did the overnight soak in OJ, put them on a seedling heat mat....

Arlington, GA(Zone 8a)

Thanks Everbody,Seeds arrived yesterday and most are getting the soak they need and Dh has created a heat box for them.Crossing Our fingers and toes.

Lakewood, WA(Zone 8a)

You'll find help with your nelumbo seeds over on the water gardening forum.

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