Yes, I have no photos of our flowering goldenrod! I will surely remedy that come this summer/fall. Solidago canadensis is a centuries-old remedy for whole body wellness. Beginning with our colic as infants, to digestive problems in our thirties, to our old and frail elderly joints.
Snip flower heads as often as needed to keep from going to seed. If kept trimmed, the plant will continue to grow back during the growing season. Manage the rhizome by keeping the plant in a large pot.
Common name: Goldenrod
Botanical name: Solidago canadensis
Scarification/Stratification: None needed. See “Sow temp/season”
Self fertile: Yes
Hardiness: Zones 5-10
Sow temp/season: The seed does not go dormant and can be planted in the fall or spring. The best results happen if one gathers seed before first frost and then allows them to cure for 90 days. 80-86F is the ideal temp for quick germination.
Sow depth/spacing: Sow 1/4 inch deep in plugs, keep moist and warm for germination. Best if newly-established plants are moved to a cold frame in early spring, then transplanted to the landscape in May.
Germination time: 7-14 days
Final spacing: 12-24 inches
Final height/spread: 5-6 feet tall and about a foot wide
pH range: Acid, neutral, and alkaline
Soil type: Will grow anywhere but prefers moist soil
Nutrition: ALL the nutrition for the biggest and healthiest plants. It actually tends to deplete the soil it lives in, so a good bit of organic material helps maintain. Fresh compost.
Drainage: Moderate drainage.
Water requirement: It does not mind wet feet – watch for root rot.
Root type: Extensive root system with deep and fibrous rhizomes.
Companion plants: It is a rather nutritionally greedy plant so it does best by itself. However, both our yarrow (achillea millefolium) and goldenrod (solidago canadensis) did very well together within a couple feet of each other.
Pest and disease resistance/susceptibility: Susceptible to powdery mildew, root rot, and needle blister rust. Blister beetles eat the pollen and stigmas. Goldenrod beetles eat the leaves and some aphids may form galls.
Sun: Full sun to part shade
Time to maturity: 90-120 days, typically flowers in the second year.
Hilling: None needed.
Propagation: Seed, seedlings, rhizomes (divisions)
Hybridization: Keep other goldenrod varieties far, far away for true seed.
Uses: Gentle and effective kidney support, immune system support, dry and powdered root to help heal stubborn wounds or ease sore joints. Steep as a tea for gentle colic control, gassiness in people of all ages. “Liberty tea” indeed.