Seasonal Maintenance Guide
- Remove winter mulch and debris in late April or early May
- Cut back dead perennial foliage when new growth emerges
- Plant new hardy perennials after last frost (mid to late May)
- Divide overcrowded catmint, salvia, and spreading perennials
- Refresh gravel pathways and repair frost damage
- Start drip irrigation after soil dries and warms
- Water established gardens deeply once weekly during dry periods
- Deadhead catmint, salvia, and perennials for continued blooms
- Shear thyme lightly after first bloom flush
- Monitor drainage and amend areas with standing water
- Harvest herbs regularly for kitchen use
- Enjoy peak garden beauty during July and August
- Reduce watering in late August as temperatures cool
- Final deep watering before freeze (late September)
- Leave perennial foliage standing for winter protection and interest
- Drain and winterize water features by mid-October
- Clean and winterize irrigation systems
- Remove annual plants after killing frost
- No maintenance required November through March
- Remove heavy snow from evergreen conifers to prevent breakage
- Avoid walking on frozen plants or icy pathways
- Enjoy Minnesota granite features and structural hardscaping under snow
- Plan next season improvements and review plant performance
- Order zone 3 hardy plants early for spring delivery