United States Edition

Black-eyed susan 'Hirta'

Rudbeckia fulgida

'Hirta' is a Black-eyed susan variety in the Rudbeckia genus with a scientific name of Rudbeckia fulgida. This variety is an Flower that typically grows as an Annual/Perennial, which is defined as a plant that can matures and completes its lifecycle over the course of one year or more. Normally grows to a mature height of 1.20 metres (3.90 feet).

Hirta Black-eyed susan is normally quite a low maintenance plant and is normally very easy to grow - great for beginner gardeners!

This plant info is provided by the myfolia gardener's wiki. All details about Black-eyed susan 'Hirta' have been kindly provided by our members.

How to grow Black-eyed susan 'Hirta'

  • Medium

Keep in mind when planting that Hirta is thought of as very hardy, so this plant will tend to survive through freezing conditions. The USDA Hardiness Zones typically associated with Hirta are Zone 3 and Zone 10. Try to keep the ph of your soil between the range of 5.6 and 7.5 as Hirta likes to be in weakly acidic soil - weakly alkaline soil.

Growing Hirta from seed

Soil temperature should be kept higher than 18°C / 64°F to ensure good germination.

By our calculations, you should look at sowing Hirta about 42 days before your last frost date.

Transplanting Hirta

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Hirta is a very hardy plant.

Harvesting Hirta

Black-eyed susan 'Hirta' information

How long does Hirta take to grow?

These estimates for how long Black-eyed susan 'Hirta' takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!

When should I sow Hirta?

Folia's when to plant Black-eyed susan 'Hirta' estimates are relative to your last frost date. Enter your frost dates and we'll calculate your sowing and planting dates for you!

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