When is it safe to plant in the Tri Lakes Area?
Spring weather in the Tri Lakes Area can vary wildly from year to year. Both Palmer Lake and Monument are considered Zone 5b for frost/hardiness and our average last frost date is May 26th. But waiting until late May can be hard to do, especially during years where we are experiencing a warmer than average spring. While we definitely encourage you to hold off on planting anything that can be damaged by a frost, not everything requires you to wait so long.
What Can I Plant?
Shrubs and Trees
If we are experiencing a warm spring and our ground is not frozen, then certain shrubs and trees can be planted right now. It’s important to only plant trees or shrubs that have been grown outside over the winter and not in a greenhouse, so they are fully acclimated to the inevitable frosts still to come. It’s also important to continue to water accordingly after planting as those warm, windy days can dry new plantings quickly.
Perennials
Overwintered perennials can also be planted when the ground is thawed. Planting perennials in spring include many benefits such as longer establishment period, easier care due to cooler weather and spring moisture, and reduced stress from summer heat. When overwintered, perennials are acclimated to frost but can still be damaged by heavy snow or extreme dips in temperatures. Providing an upside-down pot for protection during these times can help reduce breakage or leaf damage.
Seeds
There are many seeds that can be started indoors in early spring. Check out our Vegetable Seed Starting Guide for seed sowing dates and tips for vegetables. Many wildflower seeds also can and should be planted in the spring.
Cool Season Annuals
There are many annuals that can provide spring color and can tolerate a frost at the same time. Our list of Frost Tolerant Annuals for Early Season Color includes a great list of annuals that are surprisingly tough, (we’re looking at you Pansy) with some annuals able to tolerate temperatures as low as 20 degrees!
Cool Season Vegetables
Cool season vegetables thrive in cool weather. Planting them in containers that can be moved or easily protected if temperatures dip too low can extend your season even further. Generally, most cool season veggies can be planted outside in April depending on what kind of spring we are experiencing. Check out our Cool Season Vegetables for High Altitudes List for a guide to get you started!
