Your cart is currently empty!
Get Event Reminders…
…twice a month by subscribing to our newsletter
Subscribe using the form in the page footer below.
Your cart is currently empty!
…twice a month by subscribing to our newsletter
Subscribe using the form in the page footer below.
Photo:
Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0
Yellow Giant Hyssop grows quickly to reach heights of 3 to 8 feet. The bigger, lower leaves can grow to be as huge as a thick piece of bread. And, depending on the plant’s age and general height, its bloom spike can be up to 16 inches long! The creamy tiny blooms that gather together on the spike are the only thing petite about this plant. In late summer, the blooms open one at a time, changing the colour to a delicate, mellow yellow.
In addition, Yellow Giant Hyssop blooms are a thriving nectar supply, attracting and supporting bumblebees, sweat bees, and butterflies throughout the fall season and, in some cases, right up until the first frost. According to research, this is one of Ontario’s top 20 plants for feeding pollinating insects.
Botanical Name: Agastache nepetoides
Also Called: Catnip Giant Hyssop
En français: Agastache faux-népéta
Colour:
Sun / Shade:
Water: Medium-Wet, Medium, Medium-Dry
Soil:
Height:
Pollinators:
Care:
Logging in to comment gives you more features, but it is not required.
Learn how to attract woodpeckers to your garden with native plants that provide food and habitat, based on expert advice.
Learn how to grow mushrooms for personal consumption. Discover the many benefits of consuming mushrooms, from protein, fiber, antioxidants and selenium to low-calorie and vegan recipes. Get the basics of inoculating and cultivating mushrooms, as well as collecting and preparing the right substrate to grow them.
Burdock long tap roots haven’t developed the little hair-like roots that anchor them in the ground. I get great joy in pulling noxious weeds.
Gardening for seniors is a great opportunity for low-impact exercise while growing nutritious food. It can improve mood and reduce the risks.
The devastating effects of deforestation are long-lasting and far-reaching with the power to impact all living things.
Discover a simpler method for hardening off seedlings and creating protective environments for your plants to avoid sunscald and promote healthy growth.
Tomato cotyledons are waving at me and are all reaching for the light. I leave them on their heated mat until they are ready to pot up.
Discover how to attract cedar waxwings with native plants and learn about their diet and habits. Grow the right trees to invite these lovely birds into your garden.
Learn how to successfully grow marijuana outdoors in winter — from choosing the right strain to preventative measures — in this informative guide.
Discover the allure of forget me not flowers, whether as annuals or perennials. Perfect for gardeners wanting dainty, heavenly blooms. Buy or grow seeds!
Experience the vibrant autumn display and adaptability of mountain maples. Ideal for tight urban spaces, these trees thrive in various soil types and are shade-tolerant.
Discover Judy's simple process to dry Sage in the oven, which you can use to make tea & add taste to your dishes. Also find out the medicinal benefits of dried sage & how it helps against depression & Alzheimer's.
GardeningCalendar.ca gets some funding from advertisers. If you click on links and advertisements at no cost to you, the site may receive a small commission that helps fund its operation.
© 2025 J&S Calendars Ltd.