OUT OF STOCK
Ships in SPRING

Penhill Dark Monarch Dinnerplate Dahlia

Dahlia 'Penhill Dark Monarch'

$21.99
$21.99
per Bag of 3
Sale |
ZONES  3-11 | Good to grow! Zone

‘Penhill Dark Monarch’ Dahlia awakens the senses with luscious dusky plum petals. One of the most popular Dinnerplate Dahlias, it has ruffled petals in deep rose, raspberry, and buttermilk that bloom well into fall - brightening the garden just when summer’s flowers begin to fade. Dramatic 10-12” flowers make beautiful cut flowers or a garden focal point. Place in the back of a border or in front of tall ornamental grasses for a dramatic effect.

Penhill Dark Monarch Dinnerplate Dahlia

We'll let you know when the product is back in stock so you don't miss it.

By submitting your email, you agree to receive notifications according to our Privacy Policy.

Product Recommendations

Description

‘Penhill Dark Monarch’ Dahlia has beauty in spades as it dazzles the mid- to-late summer garden with 10-12" flowers. ‘Penhill Dark Monarch’ is a long-stemmed beauty that will light up the summer garden and wake up the flower vase with breathtaking, long-lasting blooms. Perfect as a garden focal point with its tall height and large blooms. A bee favorite, dahlias are easy to grow in a sunny spot with good drainage. Plant the tubers once the soil has warmed to 60F (about 2 weeks after your last frost) at a depth of 4-6 inches. Water once if the soil is dry, otherwise, wait to water until the plants have sprouted. Thereafter water regularly and deeply to encourage good growth. Once the plants are 12 tall, pinch the centers back to encourage long stems, if desired. Tall dahlias often require some staking, so plant your stakes along with your tubers so you won’t risk damaging the plant later. Cut flowers when they are almost fully open, just before they peak for longest blooms. (48-60" tall x 18" wide)  

Planting & Care

Summer Blooming Bulbs, including popular varieties such as gladiolus and dahlias, are planted in the spring and bloom in the summer. Most of these bulbs are tropical and require warm weather to be planted. There must not be any danger of frost and your ground temperature must have reached 55 degrees Fahrenheit before planting. Many
of our summer blooming bulbs can be planted as perennials in zones 9-10 (zone 8 if mulched), but should be treated as annuals in cooler climates. You can lift them and store them in the fall, or bring patio pots inside before frost. See page 15 of our Planting Guide for a bulb depth planting illustration. Read our article about How To Grow Dahlias.

Growing Dahlias: Plant Dahlia tubers after spring frosts in good garden soil with full sun. Dahlias must be protected from high winds, so we suggest you position them against a wall or be ready to stake them. Keep the plants well-watered and free of bugs, applying flower fertilizer as they grow. Your dahlias will be in full bloom by July or August, with the enormous flowers continuing to bloom until frost. As frost threatens, pull up the roots and trim off the stems. You can store the tubers in a cool dry place until the following spring.

Shipping

As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and fall-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and fall-planted bulbs are shipped at the proper planting time for your Growing Zone. Perennial and fall-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service at (802) 227-7200 or contact us by email or chat.

View

key features

Advantages
  • Attracts Butterflies
  • Attracts Hummingbirds
  • Easy To Grow
  • Long Bloom Time
  • Cut Flowers
  • Container Planting
Light Requirements
  • Full Sun
Bloom Time
Summer until frost

Additional information

Planting Time
  • Spring / Summer
Soil Moisture
  • Average
Water Tolerance
Xeric
Soil Type
  • Loamy Soil
  • Sandy Soil
  • Acidic Soil
Flower Size
8-10" flowers
Mature Height
48-60" tall
Bulb Spacing
1 bulb / tuber per sq. ft.
Planting Depth
Bulbs/Tubers should be planted 1-2" below the soil line.
Growing Zones
  • Zone 3
  • Zone 4
  • Zone 5
  • Zone 6
  • Zone 7
  • Zone 8
  • Zone 9
  • Zone 10
  • Zone 11
Hardiness Zone
  • Zone 8
  • Zone 9
  • Zone 10
  • Zone 11
Expand For More