Question
Hi, I came to this site hoping to get info as to why my very tall over 4 feet yucca plant which has a lot of spikey leaves has not bloomed.  If I remember correctly it did bloom when I first got it but has not for several years now.  I live in south west Pa and the plant is on a sloping hillside and in the full sun.  I was ready to dig it out but thought I would try to find out why no blooms before I do the drastic.  Thanks.  Joan

Answer
There are close to 50 species of yucca plants. Some will bloom once per year, while others will only bloom every 3-5 years. Based on your description, your particular plant is probably one of the species that bloom every few years.

To encourage blooming, fertilize the plant with a water-soluble fertilizer high in phosphorus and low in nitrogen.  You should begin fertilizing in late spring and continue through early August once every 14 days.

I hope this answered your question. Please write again if I can ever provide assistance.

Regards,

Mike