Pot Tuber – Dahlia Black Monarch


Unclassified Giant Decorative. Dark crimson. 1.2 m. Good for exhibition.

Out of stock

Categories: , SKU: BLAMONtub


A vigorous variety that requires good support. One of the darkest dahlias we have in our list being a rich crimson purple with almost black shading. It is also one of the oldest varieties we have first appearing in our catalogue in the late 1940’s. For the best size flowers remove the growing point when 4-5 pairs of leaves have developed and thin resulting side shoots down to allow only 3-4 shoots to develop. Once the terminal bud has developed and is about the size of a 10p piece 3 pairs of the side buds can be removed to further maximise flower size. If you are growing solely for garden display, then all flowers can be allowed to develop but resulting flowers will be smaller. Dead head regularly.

Variety:Black Monarch
Classification:Unclassified Giant Decorative Dahlia
Suitable For:Garden
Height: 1.2m
Flower Size:250 – 380 mm
Stopping:Early to mid June at 4 pairs of leaves
Disbudding:Remove the 3-4 pairs of buds below the terminal bud to get bigger flowers.
Planting Spacing:Garden: 50-60cm between plants staking well
Raiser:Pape, UK
Other Attributes:


Dahlia Pot Tubers  

The tubers we offer are dahlias which have been grown for a full season in the confines of a 4” or 5” pot, so that a small compact tuber is produced. They are ideal material for the exhibitor with a heated greenhouse or propagator to enable their own propagation. Tubers are available from DECEMBER to FEBRUARY and are packed in polythene sleeves with vermiculite. We strongly advise unpacking on arrival and if necessary store tubers in a cool frost free environment until required for setting away. A minimum of 50F (10oC) is required for propagation, water sparingly until growth is evident. Should any tuber fail to have shown any signs of growth by the end of March then please contact us so we can aim to organise replacements as rooted cuttings. Please note Pot Tuber numbers are limited so order early to avoid disappointment.

Also available as mini plants or garden ready

£6.95 per delivery for all orders to UK destination. Dahlia Tubers are generally sent 2nd class post. Please note we are unable to dispatch Tubers with live plants so separate delivery charges will apply  

All orders can be collected from the nursery in which case no carriage fee will be charged.

Please note we are unable to package Dahlia Tubers  with  Dahlia Mini Plants, Garden Ready Dahlias or Chrysanthemums. If separate deliveries are required then additional carriage and packing will need to be applied to the order.

If you choose to collect your Plants/Tubers from either Halls of Heddon, or The Nursery Ovington (please specify) we will contact you to advise when the order is ready for collection. We will make every effort to supply during the week requested but please be aware that delays may occur, so wait for us to contact you.