Month by Month Guide to Supporting Pollinators in Colorado
If you want to truly support pollinators in Colorado, it’s not just about planting a few flowers and hoping for the best.
Pollinators need consistent food sources, shelter, and safe conditions from early spring through late fall. The challenge in Colorado is our short growing season, unpredictable weather, and dry climate. The opportunity is that with the right plants and approach, you can create a habitat that supports bees, butterflies, and hummingbirds all season long with surprisingly little water.
Here’s how to support pollinators month by month in Colorado.
March: Wake Up and Prepare
Pollinators are just starting to emerge, especially native bees on warmer days. You may not see a lot of activity yet, but this is one of the most important transition periods of the year. Many native bees only live a few weeks, and if they emerge to find no food, they simply do not survive.
What they need:
- Early nectar sources (this is critical and often overlooked)
- Undisturbed habitat where they overwintered
- Protection from sudden temperature swings
What you should do:
- Hold off on aggressive yard cleanup. Hollow stems, dried grasses, and leaf litter are all shelter for overwintering insects
- Start mapping out where you want blooms throughout the season so you avoid gaps later
- Pay attention to microclimates in your yard. South-facing areas may support earlier blooms
Plants to look for or plan:
- Pasque flower
- Golden currant
- Early spring bulbs (if already established)
Pro tip:
Early spring support is one of the biggest differentiators between a decorative garden and a true pollinator habitat.
April: First Blooms Matter Most
April is when things begin to shift quickly. Warmer days bring more consistent pollinator activity, but food is still limited. This is often a bottleneck month where demand exceeds supply.
What they need:
- Reliable nectar and pollen every day temperatures allow activity
- Shelter from wind and late snowstorms
- A diversity of flower shapes for different pollinators
What you should do:
- Begin planting cold-hardy native perennials and shrubs as soon as the ground is workable
- Focus on layering your garden with low, mid, and taller plants to create structure
- Avoid disturbing soil unnecessarily, as many native bees nest underground
Plants to add:
- Prairie smoke
- Serviceberry
- Early penstemon varieties
Avoid:
- Using any insecticides or systemic treatments
- Overwatering, which can stress native plants and reduce resilience
May: Pollinator Activity Begins to Surge
May is when your garden starts to come alive. You will begin to notice more bees, early butterflies, and increased movement throughout the day. This is when your earlier planning starts to pay off.
What they need:
- Expanding and consistent food sources
- Clusters of flowers to forage efficiently
- Safe nesting and egg-laying sites
What you should do:
- Plant in groupings rather than scattering individual plants. Pollinators are more attracted to clusters
- Introduce a mix of bloom shapes and colors to support different species
- Add a shallow water source with stones or sticks so pollinators can land safely
Great plants to add:
- Penstemon
- Blanket flower
- Blue flax
Additional tip:
This is a great time to observe. Watch which plants attract the most activity. That insight will guide future planting decisions better than any list.
June: Peak Growth and First Big Bloom Cycle
June is when your garden should feel established. Growth is strong, blooms are more abundant, and pollinator diversity increases noticeably. You may start seeing specific species returning consistently.
What they need:
- Continuous nectar flow without gaps
- A mix of nectar plants and host plants
- Areas that are not overly manicured
What you should do:
- Fill any bloom gaps you notice with additional mid-season plants
- Begin tapering watering frequency to encourage deep root systems
- Leave some stems and areas undisturbed to support nesting
Watch for:
- Native bees nesting in soil or stems
- Butterflies laying eggs on host plants
- Increased hummingbird activity
Important mindset shift:
A slightly “messy” garden is often a healthier ecosystem than a perfectly manicured one.
July: High Summer Support
July brings heat, sun, and peak pollinator activity. This is when your garden does the most work, but also when stress conditions are highest due to heat and dryness.
What they need:
- Heat-tolerant, drought-resistant nectar sources
- Access to water
- Some shelter from extreme sun and wind
What you should do:
- Maintain a steady rotation of blooming plants so something is always flowering
- Provide a consistent, shallow water source and refresh it regularly
- Allow some plants to mature fully rather than constantly trimming or deadheading
Top performers:
- Rocky Mountain bee plant
- Sunflowers
- Yarrow
Heat tip:
Native plants will outperform non-natives in July with far less water. This is where choosing the right plants really pays off.
August: Late Season Planning Begins
August is often overlooked, but it plays a key role in setting up pollinators for fall success. Activity is still high, but plants begin transitioning toward seed production.
What they need:
- Strong nectar sources that hold up in heat
- Plants that begin producing seeds
- Continued habitat stability
What you should do:
- Identify any bloom gaps and fill them with late-season plants
- Allow more plants to go to seed rather than cutting them back
- Reduce watering further as plants become established
Key plants:
- Goldenrod
- Rabbitbrush
- Late-blooming asters
Why this matters:
What you do in August directly impacts how well pollinators can prepare for migration and winter.
September: Critical Fueling Period
September is one of the most important months for pollinators in Colorado. Many species are preparing for migration, while others are building reserves to survive the winter.
What they need:
- High-energy nectar sources available consistently
- Minimal disturbance
- Warm microclimates to extend activity
What you should do:
- Ensure you still have multiple plants in bloom
- Avoid cutting back or cleaning up your garden
- Observe which plants are most active and make note for next year
What you will notice:
- Increased bee activity on fewer plants
- Butterflies fueling up before migration
- A shift toward late-season species dominance
Important:
A strong September can make a major difference in pollinator survival rates.
October: Let Nature Do Its Work
By October, activity slows, but your garden is transitioning into its role as winter habitat. What you leave behind now becomes critical shelter.
What they need:
- Standing plant material for protection
- Seed heads for food
- Undisturbed soil and ground cover
What you should do:
- Resist the urge to cut everything back
- Leave stems, grasses, and flowers standing
- Stop watering unless there are extreme drought conditions
Big mistake to avoid:
Traditional fall cleanup removes essential habitat. What looks “tidy” to us is often harmful to pollinators.
November–February: Rest and Protect
Winter may look quiet, but your garden is still full of life beneath the surface. Many pollinators are overwintering in stems, soil, and leaf litter.
What they need:
- Stability and protection from disturbance
- Insulation from snow and plant material
- A complete absence of chemical exposure
What you should do:
- Leave your garden fully intact
- Avoid cutting, clearing, or heavy foot traffic in planted areas
- Use this time to reflect and plan improvements for the coming season
Planning tip:
Winter is the best time to decide where you need more early blooms, more late blooms, or better plant diversity.
The Big Picture
Supporting pollinators in Colorado comes down to a few key principles:
- Provide blooms from early spring through late fall
- Use native plants whenever possible
- Reduce water once plants are established
- Avoid pesticides entirely
- Leave your garden standing through winter
When you follow this approach, you are not just planting a garden. You are creating a functioning ecosystem.
Want Help Getting Started?
At Finding Nectar, we focus on Colorado native plants that support pollinators while also being water-wise and fire-conscious.
If you are not sure where to start, stop by the nursery or explore our Colorado Pollinator Plant Guide. We break down plants by bloom time, pollinator benefit, and fire risk so you can build a garden that works for your space.