I have asked questions before about my Pandanus Veitchii but I don’t think I have asked about what month it would be good to take my plant outside for the summer and when to bring it in. I would make sure that it has shade as out sun is too hot for it. I am concerned right now because some of our nights are a bit cold and I would not want to kill it. Also, when should it be repotted? There are really no signs of roots coming out of the bottom. Also, it has not had its soil changed for 6 years now.
Thank you for contacting the Toronto Master Gardeners.
You do not mention if you live in the Toronto area. The last frost date for Toronto is May 9th. This year you were right in holding off in bringing out your Pandanus Veitchii as the night time temperatures were quite cooler than average. Now is the perfect time to safely bring out your plant as the evening long range forecast is well above 14C. As for repotting your plant this is usally done at the beginning of the grwoing season, in the spring. according to The Spruce: “repot annually at the beginning of the growing season so the plant has room to expand, in early spring. Be careful not to damage its roots. P. veitchii’s roots will emerge from its base as it ages: When you repot it, simply cover the roots in the soil again and let them grow back. These aerial roots are designed to hold the plant upright and strong. By pushing them into the soil, you’ll keep your screw pine secure in its pot.”
I’m attaching a link to two previous question & answer which should give you all the guidance you need, see below: