Indoor seed sowing of Rudbeckia

What you need:

      • Good quality seed
      • Peat based seed compost or multi purpose compost
      • A suitable plastic pot or tray / or: cellular trays, peat pots or Jiffy 7s
      • A sheet of dark paper
      • A sheet of glass or plastic bag or a propagation lid
In case the seed has a hard coating it’s advisable to shake them in a jar filled with coarse sand and let the seeds soak overnight in some tepid water.
Moisten the compost, but make sure it doesn’t get too wet.

Place the seeds on top of the compost and cover with a layer of sieved compost which is twice the diameter of the seed.Very tiny seeds shouldn’t be covered at all.
Place a sheet of dark paper over the top of the pot or tray. This is needed for most varieties, although some do need light to germinate! Read the seed package for instructions on this!
Place a sheet of glass over the paper or cover with a plastic bag or propagation lid.
Keep the temperature between 65° – 70° F (= 18° – 21° C), which is ideal for most seeds.
Some seeds germinate within days others germinate after weeks, depending on the variety and seed quality.As soon as the seedlings appear take off the paper but leave the glass on for a few more days.
Then move to a bright spot but keep out of direct sunlight, while keeping the compost moist.
When the seedlings are big enough to handle they need to be pricked out into multi purpose compost.
Use trays, small pots or cellular trays depending on the size of the plants. Bigger plants should be pricked out individually into 3 inch pots.
Keep the temperature between 50° – 55º F (=10° – 15º C).
Water as necessary.
Let the seedlings recover from the pricking out and then move them to a cold frame. Keep the cold frame closed for a couple of weeks. Then start opening the cold frame during day time, but keep closed at night. The cold frame can be left open night and day a couple of weeks later, but keep frost free.
Plant out in late spring when all risk of frost is over.

Problems with growing daisies from seed

  • The seed is not fresh. It’s advisable to store seeds in a cool place to keep them fresh.
    Please note that some seeds don’t stay viable for long.
  • The temperature is wrong for optimum germination. Keep the temperature at the level that’s suggested on the package.

  • It is too hot and dry. On hot days keep doors and windows open and/or use shading.
  • There is not enough ventilation. Keep the greenhouse or cold frames well ventilated.
The seedlings have probably been eaten by slugs. Keep slugs and snails under control.
The seedlings have been over watered. This makes them rot and die. In future water more sparingly.