How do we use your location?
Knowing your location helps us recommend plants that will thrive in your climate, based on your Growing Zone.
Knowing your location helps us recommend plants that will thrive in your climate, based on your Growing Zone.
‘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)
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.