Polemonium caeruleum f. album
WHITE PEARL JACOB’S LADDER
Clusters of glistening white cups over summer. Lights up Part Shade, Woodland conditions, or Morning Sun. Frost hardy. Wide range of soils including clay. Neat evergreen perennial clump. Easy low maintenance. 80cm H x 30cm W.
SEED SOWING ADVICE: QUICK & EASY
Sow indoors in winter, spring or autumn / scatter outdoors spring.
INDOORS: Sow seed in punnets on surface of good quality seed raising mix.
Then gently press the seeds onto the surface of the mix, to ensure good contact.
Now barely cover seed, because light is needed for germination.
And you can use sieved mix, or fine grit, or vermiculite, or washed sand to sprinkle over the seeds.
Then thoroughly moisten the mix from below – by placing the sown punnet into a water bath (make sure the water level in the bath is below the surface of the mix).
So the moisture percolates up through the mix from the bottom.
Soak for a short time until moisture appears on the surface of the mix, and then remove and drain.
Because the mix needs to be moist throughout, but not wet.
Then place the moist punnet in a warm, well-lit position (not in direct sun).
Temperatures of 15-20°C approx. are best for rapid and optimum germination.
You can use a temperature-controlled heat mat if you have one for rapid germination, but it is not essential. A window-sill or well-lit corner is also fine.
Adding a clear plastic cover helps to retain moisture in the punnet.
And continue to keep the punnet moist by spraying the surface of the mix a fine spray water bottle, or re-soaking in the water bath, as required.
(If the punnet is light weight when you pick it up – the mix is drying out and needs another soak from below in the water bath).
Seedlings emerge in approx. 14 days.
SEED COUNT: 120 seeds per pack approx.
(We always aim to exceed the stated seed count, and give a generous serve).