Phacelia tanacetifolia - Benth.
Common Name Fiddleneck, Lacy phacelia
Family Hydrophyllaceae
USDA hardiness Coming soon
Known Hazards None known
Habitats Open flats and slopes below 1200 metres[71].
Range South-western N. America in California. Often naturalized in Europe[50].
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Moist Soil Full sun

Translate this page:

You can translate the content of this page by selecting a language in the select box.


Phacelia tanacetifolia Fiddleneck, Lacy phacelia
Phacelia tanacetifolia Fiddleneck, Lacy phacelia
Physical Characteristics
 icon of manicon of flower
Phacelia tanacetifolia is a ANNUAL growing to 0.6 m (2ft) by 0.3 m (1ft in).
It is not frost tender. It is in leaf 9-May It is in flower from Jul to September, and the seeds ripen from Aug to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees.It is noted for attracting wildlife.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.


 Cultivated Beds;
Edible Uses
None known
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.

None known


Other Uses
Green manure.

Used as a green manure crop, but has not as yet (1980) been properly tested in Britain[87]. It is not very deep rooted.
Cultivation details
Succeeds in any moderately fertile well-drained soil in a sunny position[200]. Prefers a moist soil[108]. The flowers are a rich source of nectar and is occasionally grown commercially as a crop for bees[46, 50, 61].
Seed - sow in situ in late spring or late summer. The plant often self-sows.
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants


Print Friendly and PDF
Expert comment
Botanical References
Links / References
For a list of references used on this page please go here
Readers comment
m a rategan   Mon Nov 3 01:59:35 2003
Bill Mollison, in PcII, p 25, says to plant Phacelia in orchards as it is insectary for predators of Prospatella pest.
Philip McCabe   Mon Jun 26 2006
Hi, I'm a beekeeper in ireland and have recently been informed that Phacelia tanacetifolia is an excellent crop for honeybees I have been infomred that its possible to get 1 tonne of honey from 50 acres of this crop. Can anyone tell me how much seed I would need for 9 acres of ground.
   Wed Jul 5 2006
I have worked it out to around 109 kilos. Not being very mathematical, I am probably wrong, but at 4047 square metres to an acre - 9 acres - that's 36432 square metres - and a sowing rate of 3g to every square metre....that would bee (;-) ) 109kg?
Mike   Thu Mar 29 2007
Reply to Philip McCabe. I have grown this regularly as a green cover in S.E. Scotland. It does very well indeed and is extremely attractive to bees. However, the resulting honey is like water, only suitable for blending. The idea mixer is oil seed rape honey which otherwise tends to be like concrete. The recommended seed rate for Phacelia is 10kg per hectare. In practice, 5 kg per hectare is more than sufficient.
K King   Tue Aug 21 2007
Is the sap of this plant toxic to humans please?
don   Sun Oct 25 2009
what does it look like?
QR Code

What's this?

This is a QR code (short for Quick Response) which gives fast-track access to our website pages. QR Codes are barcodes that can be read by mobile phone (smartphone) cameras. This QR Code is unique to this page. All plant pages have their own unique code. For more information about QR Codes click here.

1. Copy and print the QR code to a plant label, poster, book, website, magazines, newspaper etc and even t-shirts.
2. Smartphone users scan the QR Code which automatically takes them to the webpage the QR Code came from.
3. Smartphone users quickly have information on a plant directly for the website on their phone.
Add a comment

If you have important information about this plant that may help other users please add a comment or link below. Only comments or links that are felt to be directly relevant to a plant will be included. If you think a comment/link or information contained on this page is inaccurate or misleading we would welcome your feedback at [email protected]. If you have questions about a plant please use the Forum on this website as we do not have the resources to answer questions ourselves.

* Please note: the comments by website users are not necessarily those held by PFAF and may give misleading or inaccurate information.

To leave a comment please Register or login here All comments need to be approved so will not appear immediately.

Subject : Phacelia tanacetifolia  

Plant Uses

Edible Uses
Medicinal Uses
Other Plant uses
Woodland Gardening
Why Perennial Plants?
Top Edible Plants
Top Medicinal Plants
Garden Design

Twiter      Facebook


Content Help
Support Us
Old Database Search
About Us
Sign In

Stay informed about PFAFs progress,
challenges and hopes by signing up for
our free email ePost. You will receive
a range of benefits including:
* Important announcements and news
* Exclusive content not on the website
* Updates on new information &
functionality of the website & database

We will not sell or share your email address.
You can unsubscribe at anytime.