B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Hibiscus syriacus Red Heart is cold hardy
USDA Zone:5 -20° to -10°F (-29° to -23.5°C)
|Type of plant - shrub to tree
Flower or inflorescence:
large WHITE,deep RED centre
|Height, in meters: 3
Height, in feet: 9.90
|Hibiscus syriacus Red Heart sales history
Hibiscus syriacus Red Heart
is included in the following
B and T World Seeds flowering plant categories.
|31||: House and Container Plant Seed List|
|40||: Shrub Seed List, Hardy and Tender|
|43||: Herbaceous Border Plant Seed List|
|146||: Standard Trainable Plants|
|161||: Edible Flowers|
|Some flowers are poisonous if not cooked. Some are only edible while in bud. Identify and correctly prepare all flowers before eating. Do not eat flowers that have been sprayed with weedkiller or other chemicals.|
|185||: Plant Species whose germination is improved by Smoke|
|"Smoke" contains a butenolide compound produced by certain plants when heated, it speeds up or starts the germination of seeds from many different genera.|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Hibiscus syriacus Red Heart seeds will usually germinate in 30-60 days, even under good conditions germination may be erratic.
Soak Hibiscus syriacus Red Heart seeds in warm water, which should be changed daily. Most seeds swell up when they are soaked, those that do should be sown immediately. Seeds that don't swell can be gently scarified.