Illustration Phacelia


Melanie Melanie
24/06/2021 · 2 minutes reading time

Help your June plants grow tall and beautiful.

Here’s what’s ahead:

Important information at a glance:

  • Germination temperature: 12-18 °C

  • Sowing depth: 1-2 cm

  • Germination time: 7-14 days

  • Grow indoors: March – July

  • No-till outdoors: March – July

  • Row spacing: 15 cm

  • Plant spacing: 15 cm

  • Root depth: 25 cm

Swipe right on the beautiful purple Phacelia flower in your garden or on your balcony, and you will get a 100% match. Like the marigold, the phacelia is particularly valuable for the soil, since it releases its nutrients to it and subsequent plants can access it. It also keeps weeds away. And on top of all that, it looks absolutely gorgeous.

So let’s get planting!

Eine Phacelia wird von einer Biene angeflogen
Anyone who grows Phacelia in the garden can be sure that they will soon have many winged visitors "buzzing" in.


Here’s what you’ll need:

  • Pre-culture in pot: Large a pot, so that the flower’s roots can develop well; Diameter 30cm; Potting soil

  • Direct sowing outdoors: no special preparation necessary.

  • Distance: if there are several seedlings growing near to each other in a pot, you can keep the distance between the individual plants at 10-15 cm by isolating/separating them later.

Stick the seed-paper snippets, each containing one seed, 1-2 cm deep into the ground or into a pot with potting soil. Then just keep the seed moist, and soon the first tender seedlings will appear.

If you have sown your phacelia seeds too densely, you’ll have to remove the weaker ones so that the remaining flowers can grow properly.


Phacelia has no special demands on the soil – on the contrary, it even helps to treat the soil by storing its nutrient reserves in the soil, thus making them available to subsequent crops.


Once you've planted your flowers in pots, be sure you keep the soil moist. This is not necessary outdoors, as the plants quench their thirst using their long roots to access deeper water sources.


From June to September, the Phacelia raises its feathery leaves and purple-blue spikes of flowers in the air, giving you a summer of joy. It is not edible, at least not for us humans – but for a lot of insects, it’s a proper feast.