Showing posts with label Companion Plants. Show all posts
Showing posts with label Companion Plants. Show all posts

Sunday, June 19, 2011

Companion Planting & June Garden Update

Something I need to learn more about is companion planting. I find in the rush of spring planting , the thought of suitable companion plants is often overlooked. However, I did manage to plant lettuce and radish together (see photo below), which I now discover in hindsight are good companion plants. Reader's Digest has a good companion planting list which confirms this.


I planted some spearmint among the raspberries and rhubarb, though these are not listed together in the above list. In hindsight, I should have planted the mint in a container to keep it from spreading. But does not appear to be germinating, which may be due to use of seed several years old.


I gambled and planted the potatoes early (above photo), first week in May, as well as several other veggies. This year we were fortunate to have the last heavy frost on April 30, well before the average last frost date of May 20. Now to see if we have a below or above average hail year...

Future posts will include a scan of the garden layout for this year. Overall the plantings are more of the same that was planted in previous years. I did not plant peas this year as they did not do so well in the last two years. Most plants are doing well except the beans, which are struggling with poor germination and insect (or bird?) nibbling.

Monday, May 18, 2009

Agroclimatology - Growing-Degree Days

Today brings rain and sleet, with temperatures hovering around +1 °C. Rhubarb and other plant growth will be more or less paused for today.

Minimum temperature for plant growth is generally between 0 to 10 °C, depending on the plant. Some examples of minimum threshold temperatures for growth of some plants and insects (from here) include:
  • 2.2 Spinach
  • 4.4 Lettuce
  • 5.0 General plant growth
  • 6.0 Cabbage maggot
  • 7.0 Potatoes
  • 7.0 Variegated cutworm
  • 10.0 Corn and beans
  • 10.0 Grasshoppers, corn borers
  • 15.0 General insect development

The minimum threshold temperature is used as the base temperature to calculate Growing-Degree Days. The Middle Earth Garden has about 1200 to 1350 total degree days above 5°C based on data recorded from 1971 to 2000 (see map below).

If anyone has more information on Growing-Degree Days (GDD) or related topics please feel free to share. I'm trying to find a chart of GDD for different vegetables but as yet unable to find anything.
The Lovage (above) came up after I dug the entire garden lightly with a shovel. I didn't realize it was perennial. Now I know! It came up shifted over somewhat from its former resting place, fortunately surviving the shovel abuse. Apparently Lovage is a good companion plant to almost all plants and considered a "magic bullet" of companion planting.


The rain barrels were drained dry after a temporary heat wave last Saturday and Sunday (+20 °C), watering freshly planted seeds including bush beans and spinach. The heat wave was caused by the locally well known chinook wind or less locally but more internationally well known föhn/foehn wind to be more meteorologically correct.

Today this gardener has retreated inside while the rain barrels refresh ready for the next change of winds.