Mutant Rudbeckia

I like to introduce you to a two headed Black Eyed Susan.

Rudbeckias (Black Eyed Susan) are part of the Asteraceae family, typically the daisy group of plants. They are known to have these anomalies now and again.

Sometimes these rare form of flowers are created due to a disease called Aster Yellows,  some virus,  physical damage, or just a random natural mutation.

For some reason, these are conjoined at the base of the flower.  Held taller than the other flowers, it was quite noticeable. Once the petals begin to fall, I will update and show what the seed heads look like.

Pretty cool. They remind me of a sunflower held this way.

Plant Profile: Rudbeckia triloba

Move over Rudbeckia fulgida! If you want abundant flowers, with a taller habit, well you've got to get some Rudbeckia triloba.

There is a love/hate relationship with this plant, but I am not sure why. It's done nothing but perform for me.

Rudbeckia triloba is a native plant to North America. Seen in a lot of fields or even roadsides in Central/Eastern United States. For me it's a welcomed performer in the perennial border - specifically in the tough areas where you need height and long blooming periods.

In this photo below, R. triloba is grown in the back. Nearly a foot taller than its relative: R. fulgida.

Rudbeckia triloba has smaller flowers than other Rudbeckias.  I have a real fondness for their delicate petals. They are wonderful to dry - great for craft making.

Be aware: it is an herbaceous biennial, acting somewhat like a perennial. I've had limited success in keeping the same plant growing for about a year or two, then having to be reliant on seedlings for the following year. I've seen it reach about 5 feet in height, but here: it's around 3 1/2 feet tall.

Alos known as "Brown Eyed Susan", its flowers can nearly bloom for 3 months!


In my experience, it has better drought tolerance than R. fulgida, R. hirta and a little less tolerant than R. laciniata. Very few pests are attracted to R. triloba. Just some spider mites when it gets really hot in the summer and some leaf minor.

Here are the differences:

Distinct tri-leaves - 3 lobed shaped leaves which give it its name. They develop by May and you'll see the growth rate is much faster than the other Rudbeckias.

Rudbeckia triloba is a fabulous pollinator plant. Providing pollen and seeds for nature. Not to mention winter interest with their brown centres.

If you are growing R. triloba in a lot of shade, it stretches thus requiring some sort of support. An odd twig or peony ring would suffice.

Here is a sample of a small R. triloba seedling: easy to transplant in early spring to relocate. Similar looking to the fulgida baby plants, but less pubescent (less hairy).

A good helping of leaf mould or compost around the root level in spring-time, and it'll perform beautifully.

If you have concerns of it spreading uncontrollably, then remove the spent flowers (if left will naturalize the garden).

Note, when handling:  wear long sleeve shirts when the plant is gaining height. I find I get an itchy arm (similar to Juniper itch) if I weed around the base. Thankfully, it grows quickly and once it reaches 2 feet in height, the growth will choke out any room for germinating weeds!

Enjoy!

Rudbeckia hirta 'Indian Summer'

Lovely sunsets, cooler evenings and Black Eyed Susan's are some of my fondest delights of summer.

Rudbeckia flowers hold a special spot in my heart. There are several cultivars, but my favourite has to be one from the hirta series. Rudbeckia hirta 'Indian Summer'.

Here, the flowers in my garden stand out like nothing else -  to bid me good morning each time I peak outside while I eat my breakfast. 

Flowers span out to 4 inches, once completely unfurled.

This is the 2nd year for my Indian Summer plants, and each have about 8-10 flowers.  I'm sure I would have more if it were not for my dense shade. They stand about 20 inches and just perform with ease, even in low light conditions.

Here in zone 5b, they are treated as a biennial, although, I've seen the same plants last 3-4 years. Self seeding year after year, offering seedlings in case the parent plant dies off.

Even when flowers unfurl, the range of colour is just amazing.

Look for them both in the perennial and annual sections of your local garden centre (they can be sold as an annual bedding plant). Or try them from seed. They are wonderful!