They are easy to germinate but are best left until late spring. It has to be really warm for them. They catch up and grow well into the late summer.
I realized how much warmth and rain they needed when I went to Fiji and saw a wonderful display outside the town hall in Sigatoka. Temperatures were in the upper 20s and it rained every night!
They are not difficult. i would say fairly similar to marigold seeds. Easy to germinate but prone to frost damage so dont do too early. I have used lidl ones and had good success.
i am in sw london and for me early april was good time to sow them.
Once you have babies, beware slugs love them too.
i have used wilko seeds too for other plants. They are alright. As a new gardener i tried whatever looked interesting
Zinnias are good in pots too as long as you water them. Out of over 150 pots of various stuff zinnia, clematis and tomato were the ones who needed regular watering.
Last edited: 02 January 2017 10:37:29
I start mine in March in an electric propagator, but I have a greenhouse and can keep them in it until frosts are over. Never been hard to germinate. I've also bought them as plug plants.
I usually start mine off in late March/early April, unheated in the conservatory. I do use plastic lids over the trays of all my seeds to try and retain a little warmth & moisture.
I've found zinnias pretty easy in the past, cheap wilko seed mix.
You should have no problem germinating them aym, especially now you have a shiny new vitopod propagator. ?