Planting Wildflowers

When to Plant: Fall is the Best Time

It might seem strange to be thinking about spring flowers in the fall, but in the Sonoran Desert, the best time to plant wildflower seeds is from October through mid-December. These plants are true drought evaders – seeds lie dormant until triggered by fall and winter rains. Once they sprout, you’ll see them grow into lush green foliage. By late January, a few blooms may appear, but come February and March, your landscape should be bursting with color.

What to Plant: Stick with Local Wildflowers That Thrive

For the best results, choose wildflowers that are native to the Sonoran Desert. These plants are naturally adapted to our arid climate and will deliver seasonal color while using very little water. Steer clear of seed mixes labeled “wildflower” or “meadow,” as they often include non-native species that may not perform well – or worse, become invasive. For example, African daisies, as their name suggests, originate from Africa and can spread aggressively in desert environments.

Instead, look for native desert varieties like:

• Arroyo Lupine
• Desert Bluebell
• Mexican Gold Poppy
• Owl’s Clover

Shop at local nurseries or native plant sales to find reputable sources of wildflower seeds. If you’re looking online, check out Native Seeds SEARCH, a Tucson non-profit dedicated to seed conservation. They offer individual seed packets as well as wildflower mixes through an affiliated business, The ‘Native Seed’ Company.

How to Plant: Simple Steps for Success

Wildflowers grow best in full sun, so choose a spot that gets at least six hours of direct sunlight each day. Instead of covering large areas, try seeding smaller pockets throughout your landscape. Focus on natural-looking locations – low spots, along pathways, or near boulders – where the wildflowers can thrive and blend seamlessly into the surroundings.

When planting, follow these steps:

1. Loosen or rough up the area by lightly raking the surface.
2. Mix your seeds with two or more cups of fine soil or compost to help spread them evenly.
3. Scatter seeds over bare soil, decomposed granite, or around boulders.
4. Lightly rake or press seeds into the surface – don’t bury them.
5. Water gently to settle them in.

Watering & Ongoing Care

Once established, wildflowers are easy to care for – perfect for desert landscapes. With a little attention early on, they’ll thrive with minimal effort.

Here are a few simple guidelines to keep them healthy and help them return year after year:

• If seasonal rain arrives, no watering is needed.
• Without rain, water 2-3 times a week until seedlings sprout, then reduce to once every 3-4 weeks.
• Be sure to remove weeds that may compete with your wildflowers for space or water.
• Let wildflowers go to seed after blooming.
• Collect seeds or let them fall naturally to reseed for next year.
• Dried plants can be pulled or cut back.