Midlands Dahlia Society Logo based on the original 1958 broach Midlands Dahlia Society
The Midlands Dahlia Society


Propagation and Planting Out Talks  Wed 15th April 09

Over 35 members attended the Meeting to hear two talks:

Propagation by Les Jones

Les gave a practical demonstration of how to propagate Dahlias from tubers.  He brought several tubers which had good shoots.   

He started with Split Tubers.  The first thing to do is get a big knife!  This is used to split the tuber from the centre.  Then the individual tuber / shoots can be potted on.

Splitting tubers

Les then moved on to Cuttings.   These should be planted in a 50/50 mixture of Perlite and Peat in a tray.  Silver sand should be sprinkled on top.   This is so that when the hole for the cutting is made (with a pencil) some of the sand falls into the hole and helps drainage.  Bottom heat is important.

dahlia cuttings

 Audience participation was encouraged.  Here Cord and friend from Wellesbourne had a go at taking cuttings from a tuber.

taking dahlia cuttings

If you do not have 'bottom heat' then placing a cutting in a pot covered with a plastic bag can be done.

AA variation on this theme is to place several cuttings in some damp peat and rolled up together in a 'plastic sleeve' as can be seen below.  Once rolled up they are secured with a plastic band and should root in approx 3 weeks.

dahlia cuttings in a plastic sleeve dahlia cuttings in peat

Les ended his demonstration with a Q & A session.  One question was about what to do is a cutting had a hollow stem.  He said move to the next pair of leaves up the stem.  He also commented that if an internodal cutting was taken   ( i.e. in the middle between pairs of leaves rather than just below a pair of leaves) then it would take and flower in year 1, however it would be blind in year 2!