Weather wise, March can be a very unpredictable month. Sometimes you can tackle some early spring chores and sometimes you just need to sit on your hands and wait until the weather cooperates.
The biggest problem is wet, soggy soil. When doing garden work, avoid standing, walking or driving over wet soils as much as possible. Wet soils compact much more easily. It is extremely important not to till soggy soils, especially with a rotary tiller. Its not worth risking the soil structure of your planting bed just to try to gain a couple of weeks gardening time.
That said, here are some chores you might be able to tackle.
In much of Delaware County, this month is the time to start seeds for warm season vegetables and flowers that need 8 weeks of growth inside – things like tomatoes and marigolds. You can also start cool season crops like lettuce and broccoli to give them a head start for planting out in mid-April.
Some cold season vegetables (like peas, potatoes, spinach, carrots, radish, onion sets and directly seeded lettuce) can be planted in the garden near the end of the month provided the soil is not too wet to work. The soil should crumble when handled.
You may be able to begin cleaning up some garden debris. It is beneficial to native insects if you can wait until daytime temperatures are consistently above 50 F so they have time to emerge for the season.
Rake excess debris carefully off beds that hold earliest bloomers first – bulbs and spring ephemerals. It is OK (actually beneficial) to leave the leaves in place in a woodland garden as a natural mulch. Woodland plants will grow through the leaf cover and the leaves will decompose, enriching the soil.
Trim the old foliage from ornamental grasses before they start new growth.
Trim old foliage from very early spring blooming perennials like Hellabore and Epimedium in order to showcase their spring flowers.
Finish pruning fruit trees and some woody ornamentals. Rejuvenate some overgrown shrubs and hedges by cutting them back. This article provides guidance on what to prune when.
Ornamental shrubs can be transplanted while dormant provided – you guessed it – the soil is not too wet.
Plant pansies and violas in the garden.
Direct sow poppy seeds in the flower beds. Make sure to mark them so you don’t disturb them cleaning up beds later.
Carefully push any perennials that have heaved out of the soil due to freeze-thaw cycles back in place to avoid root damage. Take note of any perennials that will need to be divided next month.
Clean out any bird houses or nesting boxes to be ready for a new season.
Enjoy all the fresh air and sunshine that you can!