How to Grow Paulownia tomentosa from Seeds

Princess Tree (Paulownia tomentosa) or Kiri adapts to various types of soil, but not rocky and compact soils.
It is a warm climate tree, grows between 46 to 86 F and good drainage is required. Learn all about how to grow paulownia tomentosa in this article.

If the annual rainfall drop is under 100mm per month additional watering will necessary. Keep in mind for calculation that 10mm of rain delivers 10 liters of water.

Easy Steps for Grow Paulownia Tomentosa

Step 1

Fill a pot with a mixture of sand, vermiculite, and peat moss.

Step 2

Put a pinch of seed on top of the planting medium, then cover the seeds with a patch of gauze to hold them in place.

princess tree seeds
Princess Tree Seeds

Step 3

Water the seeds enough to keep them moist but not exceeded. As the seeds begin to grow, remove the gauze and split them until you have only 1 per container. Kiri tree seeds will germinate between 1-2 months.

Step 4

Wait until the seedlings are 10″ to 14″ tall. Let the seedlings rest in the shade for 3 to 5 days before transplanting.

Step 5

Move to a larger pot and water regularly. Keep it in the same conditions of temperature, light, and water. Approximately 2 months later they should be taken outside.

paulownia tomentosa
Paulownia tomentosa

We hope this guide will be of great help to you. You can read more information about Princess Tree.

About Henry Morgan

We are the Morgans, Henry, and Julia, both agronomists from the University of Michigan, where we met. We are experts in putting our hands in the soil and developing organic foods and improving production processes for decades. Likewise, we have worked for companies such as Mondelez International, BASF, Monsanto, etc. currently in our role as science writers for as well as advisors in promoting large scale food growing in urbanized areas. In this website, we share what we are most passionate about, gardening and farming. Enjoy and see real photos on our website.

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