I planted my asparagus behind my garage that has a SW facing of 245 degrees. The rear row, the one closest to my garage, is not faring well. Soil prep for both rows was essentially the same. I had tried to water a little more heavily for the row near the garage, thinking the foundation might be heating and drying out the soil adjacent to it and impacting that row of asparagus.
Pictures attached. Any suggestions? This is the first year.
Thank you, Phil L.
Phil, It is possible that the radiant heat from the concrete wall is keeping the bed too dry. Keeping consistent soil moisture is important. You want to make sure to keep all weeds out of the bed for the best production; asparagus hates any competition, and I would suggest mulching the bed with shredded leaves or straw to help maintain the moisture level. Also make sure your soil pH is above 6.0. It’s possible the concrete or any pea gravel could be altering the pH near the wall. You might also try feeding the plants with a mild formula Vegetable Fertilizer. Be sure to leave the foliage over the winter and remove before the new growth appears in the spring.
For more helpful asparagus growing tips, read Just About Everything About Asparagus.