Click a button to add that quantity to your cart
seed quantities can be multiplied when added to the cart
Approximately 1200.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Delphinium semibarbatum is cold hardy
USDA Zone:6 -10° to 0°F (-23.5° to -18°C)
|Type of plant - biennial, the leaves form a low rosette the first year, growing vertically and flowering the following spring.
Flower or inflorescence:
SULPHUR-YELLOW panicles, good cut flower
deeply cut longflowering border
|Height, in meters: 1.5
Height, in feet: 4.95
|Delphinium semibarbatum sales history
| Parts of Delphinium semibarbatum are considered toxic.
Synonyms (alternative names) for Delphinium semibarbatum:
|Delphinium sulphureum, Delphinium zalil,|
Common names for Delphinium semibarbatum:
|Delphinium Sulphur Spike,|
is included in the following
B and T World Seeds flowering plant categories.
|1||: Stock list|
|Our stock changes almost every day, with seeds arriving and being shipped all over the world.|
We only stock long lived seeds, except for a few species that are always in demand.
Seeds that are not in stock are acquired fresh when ordered.
|6||: Bulbous and Rhizomatous Plant Seed List|
|9||: Alpine and Rock Garden Seed List (Hardy and Tender)|
|36||: Herb Seed List Culinary Medicinal Dye and Aromatic|
|Not all medicinal, dye or aromatic plants are edible, some are toxic if eaten and others are dangerous if applied to the skin. Please check uses for plants.|
|44||: Cut flowers Commercial and other Recommended Varieties|
|53||: Bedding Plant Seed List|
|74||: West Asian Native and Introduced Plants|
|106||: Central Asian Native Plant Seed List|
|131||: Toxic Plants|
|Some of the deadliest known poisons are found in plants. Some major food plants, eaten by millions of people every day, have toxic parts.|
|720||: Fire Resistant Plants|
|Different classes of resistance: some grow back, some don't burn, a few have highly inflammable leaves that leave the rest of the plant intact, some trees don't have lower branches.|
|952||: Wholesale Selection|
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.
Delphinium semibarbatum seeds will usually germinate in 14-21 days.
Delphinium semibarbatum seeds need to be "overwintered" before they will germinate.
Stratification; cold treatment or vernalization. Seeds of some species need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
Cold stratify 2 weeks High temperatures cause dormancy.