Yes, planting lavender and black eyed susans together is one of the best moves you can make in a sunny garden. Both plants love full sun, drain well, and need very little water once their roots settle in. They bloom during the same months, and the purple-gold color contrast looks great from across the yard.
I tested this pairing in a south-facing border three summers ago. By July, deep purple lavender spikes stood right next to bright gold blooms. Bees and butterflies covered both plants all day long. They bounced between the lavender and the black eyed susans without a break. That bed became the most noticed spot in my whole garden and I've kept the pairing going ever since.
These two get along well because they come from similar places. Lavender grew in the dry, hot hills of the Mediterranean. Black eyed susans grew in the open prairies of North America. Neither plant wants rich, wet soil. Too much water and food hurts both of them. You can treat the whole bed the same way without playing favorites between the two plants.
Penn State Extension found that mixing different flowers in groups draws in more bees than single-species beds do. A bed with both lavender and black eyed susans gives pollinators two types of nectar side by side. This pulls in a wider range of bees, butterflies, and helpful insects. Your garden looks better and works harder for the local ecosystem at the same time.
The rules for picking black eyed susan companion plants stay the same no matter what you pair them with. Look for partners that share the same sun, water, and soil needs. Don't pair them with plants like hostas that crave moisture. Coneflowers, salvia, catmint, and tall grasses all make fine partners too. Each of these handles full sun and dry spells well.
For planting lavender with Rudbeckia, spacing and spot choice matter most. Set both plants about 18 inches apart to give them room to fill out. Put your lavender on a slight rise or mound if your soil holds water. Lavender roots rot fast in soggy ground. The black eyed susans handle a wider range of soil moisture, so they can go in the lower spots of the bed.
Pick English lavender over French or Spanish types if you garden in zones 5 through 7. English types take cold winters much better. They match the hardiness range of most black eyed susan types. Plant both in spring after your last frost and water them well for the first few weeks. Then step back and let them settle in.
I also found that planting lavender in front and black eyed susans behind creates a nice layered look. The lavender tops out at about 18 to 24 inches while the black eyed susans reach 2 to 3 feet. You see both plants at the same time without one hiding the other. By their second summer, you will have a low-care bed of purple and gold that feeds pollinators and looks great all season. This pairing has saved me time, water, and trips to the garden center year after year.
Read the full article: Black Eyed Susan Complete Growing Guide
