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NW Home Gardening Message Board › Portland nurseryYOUR GARDEN IN THE SUMMER HEAT


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Portland, OR
2.  A link to Portland Nursery newsletter  http://portlandnurser...­

3. From Portland Nursery

We're hot here at the nursery and we're sure you are too. Here are some important tips we wanted you to have.
Our biggest concern in a heatwave is with the watering of new plantings. The best approach is to water deeply, on a low setting for 45 minutes or so — soaker hoses work best. Containers may need to be watered more than once a day, and if you have purchased plants lately and have not planted them yet, keep the plants watered and in the shade and wait until after the heat wave to plant. Also, if plants are wilting but have been watered, it may be due to warm air temperatures — no need to re-water.
For more information, you can email us at­

  • Wilting does not always mean thirsty – Some plants like Rhododendrons will curl their leaves during high temperatures to conserve moisture. If the ground is moist and they still do this, you can use a product like Bonide Wilt Stop to cut down on moisture loss from the leaves. Apply early in the morning, or later in the evening.
  • Soaker hoses use less water! – Overhead sprinklers lose a lot of water to evaporation – using soaker hoses saves water and helps with deeper watering.
  • Even and consistent watering helps prevent blossom end-rot in tomatoes – Again, watering from below and at the same intervals (every other day in this weather is good) will help, but if you see blossom end-rot forming on your tomatoes use a product like Bonide’s Blossom End Rot to give them a quickly available dose of lime.
  • Nematodes hate dry heat – Wait until the temperatures get back down to the mid to upper 80’s to apply nematodes, and make sure the area is well watered first before applying.
  • New plantings also hate dry heat – We recommend waiting until the temperatures drop a bit before adding new plants to your garden as well. You can hold them in a shaded area for a week or so, just make sure they are kept watered.
  • Freshen up those pots! – If replanting your pots, don’t forget to use Sure-Start for water retention and the mycorrhizae that will help your plants take up nutrients.
  • Maxicrop for a quick boost – Our staff likes to use products like Maxicrop as a transplant solution to give new plantings (and existing ones) a boost without the danger of burning new roots.
  • Wetting wilting foliage in the heat and sun can scorch! – Water from below if possible, or when the sun is off them - like early in the morning, or later in the day.
  • Even established plantings need water in these temps. – But hold off on fertilizing until things cool down a bit, or use an organic form of fertilize that will slow release.
  • Check labels – Most pesticides and fungicides have warnings on their labels about use during high temperatures. Check before spraying to prevent any damage.
  • OK – I know I said 10 – Take a break in the shade with some ice tea to hydrate yourself as well and enjoy your garden – it’s Portland after all, and the heat won’t last long!

Portland Nursery Newsletter - If you are having trouble viewing this message, you can View it Online Here. Thanks for subscribing.

I hope you found something of interest here! Happy gardening!!

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