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Hibiscus syriacus Red Heart


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Hibiscus syriacus Red Heart

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 41465

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.
487:  Malvaceae


Happier and Healthier Plants, Naturally

plant-fungus communities, for improved nutrition, and disease and drought resistance.


Germination guide for Hibiscus syriacus Red Heart

These notes are a general guide, it is recommended to check specialist literature for some of the more unusual seeds in our lists.
Seed Germination Theory and Practice by Professor Norman C. Deno
Some knowledge about growing from seed is necessary to germinate even the easiest seeds. Most seeds require humidity to germinate, even desert plants like Welwitschia mirabilis 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.
Some seeds need to be in the light (surface sown) or in the dark (sown deep enough to receive little or no light) to germinate. A rule of thumb is to cover the seeds their own width deep in the growing medium, but some seeds prefer to be sown much deeper, and some fairly large seeds like to be surface sown (or higher).
Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures.
Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal.

Hibiscus syriacus Red Heart seeds will usually germinate in 30-60 days, even under good conditions germination may be erratic.
Sow Hibiscus syriacus Red Heart seeds about 2mm deep in a Well drained seed sowing mix at about 22°C.

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.


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