Sign up for a Gertens Winter Workshop offered all season long. View Options: HERE.

Girls' Night Out is Back for the first three Wednesdays in November: Get tickets HERE. Space is limited!

Stock up on firewood HERE and save 10% with code STAYWARM

Alcea, Hollyhock, Black Watchman ~ 60 seeds

Out of stock

Temporarily Out of Stock
SKU
43051914
View Store Map
Create an account/login to be notified when this product is in stock bell
Sun Preference
Full-Sun
Bloom or Harvest Time
Summer, Fall
  $2.99

Description

Alcea rosea
Biennial
Summer/fall bloom
Frost hardy

A butterfly, bee, & hummingbird favorite!

This beautiful heirloom variety, grown by Thomas Jefferson at his Monticello estate, has been carefully reselected for Renee by the best Dutch seedsmen for classic form and rich color. The big 3 to 4 inch hibiscus-like blossoms have satiny petals in a wonderful deep dark maroon that shades to pure black. Black Watchman’s blooms unfurl slowly on sturdy tall 5 to 7 foot stalks and make a singular and striking garden display, setting off all the other flowers around them.

Seed Starting Successfully

Start your garden from scratch with Gertens' wide variety of seed packets! Whether you're a seasoned gardener or just starting out, we have seeds for every skill level and garden size. From colorful flowers to delicious vegetables, our seeds are carefully selected for their quality and performance.

Seed Starting Successfully

Grow Your Best

When to Grow Veggies & Fruits

From Our Experts

Details

Plant In: March - June
Sun/Shade: Full sun 
Planting Depth: 1/2 inch 
Space Seeds: 6 - 8 inches
Days to Germinate: 7 - 14 days 
Mature Height: 5 - 7 feet 

EASIEST TO START DIRECTLY IN THE GARDEN 
Plant seeds in full sun in ordinary garden soil in spring after danger of frost is past. Poke seeds into well-worked soil about 1/2 inch deep, 6 to 8 inches apart. Keep moist until germination in 7 to 14 days.

TO START EARLY INDOORS 
Start seeds indoors about 8 weeks before last expected frost date. Sow 2 inches apart and 1/2 inch deep in flats or individual containers of seed starting mix. Provide a strong light source and keep mix evenly moist to await germination in 7 to 14 days. When seedlings are 3 to 4 inches tall, transplant 18 to 24 inches apart after gradually acclimating to outdoor conditions. Thin or transplant seedlings 18 to 24 inches apart so plants have ample room to mature.

GROWING NOTES 
Black Watchman may bloom the first year from seed if planted early in spring. Planted later, it will bloom the following summer. After blossoms fade, cut off the spent flower stalks just above the ground. Fertilize well and continue to water plants as needed, then roots will push another flush of enchanting flower spires to open in fall.

More Information

Mature Height (Range) 61" - 72", 73" +
Spacing in Row 6-8", thin/transplant 18-24" apart
Days to Germination 7-14 days
Planting Depth 1/2"
Seed Packet Type Flowers
Plant Life Cycle Biennial
Bloom or Harvest Time Summer, Fall
Sun Preference Full-Sun
Common Family Name Hollyhock
Brand Renee's Garden

Product Questions (12)

Starting times will vary depending on the vegetable you are growing. Each seed packet will have specific sowing instructions for that type of vegetable. Some plants, such as tomatoes and peppers, should be started indoors, 6-8 weeks before the last frost...
The process of bringing seeds outside is called hardening off. Hardening off is generally done sometime after the seedling has two full sets of normal leaves. In Minnesota, you want to begin hardening off seedlings in late April/early May.  To ...
If you have a southern facing window with all day sun, you may grow seedlings in a windowsill. Be sure to rotate the seedlings frequently to ensure the plants do not lean heavily towards the sun. For more even results, use a grow light, positioned roughly...
We recommend using either high intensity T5 fluorescent bulbs, or LED grow lights. Both setups will produce excellent results. T5s are the typical grow light, are economical and come in frequencies that are helpful for plant development. LED technology...
Grow lights should be kept roughly 4-5” above the top of seedling leaves. If you are using very powerful LEDs, you could even keep them 8-10” away.
Grow lights should be used to mimic a natural sunlight cycle for plants. We recommend using them 12 hours a day, from roughly 7am to 7pm.  
A variety of seedling trays exist for seed starting. If you are starting smaller seeds, a simple peat cell tray works great. However, the larger the seed, the larger the initial pot should be. If you are starting larger seeds indoors such as: sunflowers...
Do not start any type of fertilizer regime for young seedlings until they have at least two full sets of regular leaves. Start with a root stimulator, then after a month you may move on to a gentle, weak (half strength) water-based fertilizer. Remember...
Let the roots tell you when to transplant. When you begin to see the seedling’s root growing out of the bottom of their current pot, it is time to transplant up to something larger. We recommend using a 4” nursery pot to transplant most seedlings. In...
Gertens carries a wide variety of both spring and autumn planted bulbs. Spring planted bulbs, such as gladioli and dahlias, are best started indoors in early April, and planted outside once the soil temperatures are above 55 F. Autumn planted bulbs, ...
The big three tips are: 1) Staking and training 2) Feeding and watering and 3) Harvesting and enjoying. 1) Keeping plants trained and staked allows air circulation around crops and provides much-needed support for produce as it grows...
Gertens does carry an assortment of both perennials, as well as annual and perennial wildflower mixes. It is important to remember when growing perennials, that you will not get any flowers the first year of growth. It often takes a perennial 2-3 years...
loader
Loading...